Reading Comprehension Assessment Series
GRADE 6
MAIN IDEA & KEY DETAILS
The Columbian Exchange: Biology, Power & the Making of the Modern World
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Webb's
Depth of Knowledge · Hess's Cognitive Rigor Matrix
Tier
2 & Tier 3 Academic Vocabulary
· Frustration-Level Text
Student
Name: ________________________________
Date: ____________
Teacher:
________________________________ Period
/ Class: ____________
DIRECTIONS
Read and annotate carefully, distinguishing
key details (explicitly stated facts) from main ideas (what the author argues
those facts mean). Answer every question. Written responses require formal
academic register, complete sentences, and direct textual evidence.
PASSAGE: THE BIOLOGICAL CONSEQUENCES OF
1492
In 1492, Christopher Columbus's voyage to the
Americas initiated one of the most consequential biological events in the
history of the modern world—an event that would not be named or systematically
studied until historian Alfred Crosby coined the term "Columbian
Exchange" in his 1972 book The Columbian Exchange: Biological and Cultural
Consequences of 1492. Crosby's central argument was that the collision between
the Old World (Europe, Africa, and Asia) and the New World (the Americas) set in
motion a massive, bidirectional transfer of plants, animals, diseases, and
peoples that permanently altered the ecology, demography, and economy of every
inhabited continent on earth.
The Old World sent to the Americas an array
of domesticated animals that the Western Hemisphere had never possessed:
horses, cattle, pigs, sheep, and chickens. The introduction of the horse, in
particular, transformed the cultures of Plains Indigenous peoples within a
single generation—enabling new modes of warfare, hunting, and social
organization that had been impossible in a world without equine power. European
settlers also introduced smallpox, measles, influenza, and dozens of other
infectious diseases to populations with no acquired immunity. The demographic
consequences were catastrophic beyond measure: historians estimate that between
50 and 90 percent of the Indigenous population of the Americas died within the
first century of sustained European contact—a population collapse of staggering
magnitude with no parallel in recorded human history.
The Americas sent to the Old World a
nutritional revolution. Maize (corn), potatoes, tomatoes, cacao, chili peppers,
squash, sweet potatoes, and cassava were unknown in Europe, Africa, and Asia
before 1492. The potato alone is credited by historians with enabling a
dramatic expansion of the European population: it produced more caloric yield
per acre than any grain crop, grew in climates too cold and wet for wheat, and
fed the laboring poor of Ireland, Germany, and Russia through winters that
would previously have brought famine. The tomato, now inseparable from Italian
cuisine and Mediterranean culture, was originally a New World plant
domesticated in Mesoamerica.
Historian J. R. McNeill has argued that the
Columbian Exchange was not a transaction between equals. The Old World gave the
Americas diseases for which Indigenous peoples had no immunity; the New World
gave the Old World food crops that ultimately multiplied European populations
and military power. The asymmetry was compounded by the Atlantic slave trade,
which brought millions of enslaved Africans to the Americas to labor on
plantations producing New World crops—sugar, tobacco, and cotton—for European and
global markets. The Columbian Exchange, in this reading, was inseparable from
conquest, exploitation, and the brutal reorganization of human labor across
hemispheres.
The legacy of the Columbian Exchange is
neither simply positive nor simply negative; it is a complex, contested, and
still-unfolding historical transformation. The same potato that fed European
peasants and fueled population growth also, when it failed in the Irish Potato
Famine of 1845–1852, caused the death of approximately one million people and
the emigration of another million—a catastrophe produced partly by the
over-reliance on a single New World crop. The same food crops that enriched
global cuisine were cultivated through systems of coerced labor whose
descendants continue to live with the structural inequalities those systems
produced.
Alfred Crosby's original insight—that the
most important consequences of Columbus's voyage were biological and
ecological, not political—has been validated by subsequent scholarship and
remains one of the most powerful conceptual frameworks in the study of global
history.
SECTION A — KEY DETAILS:
MULTIPLE-CHOICE (2 pts each)
Questions 1–5: Locate and interpret
explicitly stated facts and evidence.
1. According to the passage, who
coined the term "Columbian Exchange," and when?
DOK 1 | CRM
A-1
A) Christopher Columbus coined it in
his 1492 journal to describe the goods exchanged between Spain and the
Caribbean islands
B) Historian Alfred Crosby coined the
term in his 1972 book The Columbian Exchange: Biological and Cultural
Consequences of 1492
C) Historian J. R. McNeill coined the
term in the twentieth century to describe the demographic consequences of
European contact
D) The term was coined collectively
by a group of Latin American historians at a 1950 conference on the legacy of
colonialism
2. According to paragraph two, what
is the estimated range of Indigenous population loss in the Americas within the
first century of sustained European contact?
DOK 1 | CRM
A-1
A) Between 10 and 25 percent of the
Indigenous population, primarily in coastal areas near European settlements
B) Exactly 50 percent of all
Indigenous peoples, distributed evenly across North and South America
C) Between 50 and 90 percent of the
Indigenous population—a collapse with no parallel in recorded human history
D) Between 25 and 40 percent,
primarily due to warfare rather than disease
3. According to paragraph three, why
does the passage identify the potato as particularly significant among New
World crops introduced to Europe?
DOK 1 | CRM
A-1
A) The potato was the most expensive
crop in Europe and enabled wealthy landowners to accumulate agricultural
fortunes
B) The potato produced more caloric
yield per acre than any grain crop, grew in climates too cold and wet for
wheat, and fed the laboring poor of Ireland, Germany, and Russia through
potentially famine-inducing winters
C) The potato was the only New World
crop that could be grown in the Mediterranean climate of southern Europe and
northern Africa
D) The potato became central to
European identity because it replaced bread as the primary staple food of all
social classes
4. According to paragraph four, how
does historian J. R. McNeill characterize the Columbian Exchange?
DOK 2 | CRM
B-2
A) A mutually beneficial transaction
that improved living conditions on both sides of the Atlantic, though unevenly
B) An asymmetrical exchange in which
the Old World transmitted devastating diseases to the Americas while receiving
food crops that multiplied European power—a process compounded by the slave
trade and inseparable from conquest and exploitation
C) A primarily commercial event
driven by European demand for luxury goods that incidentally produced some
biological exchange
D) A positive ecological
transformation that created the conditions for global agricultural diversity
and food security
5. According to paragraph five, how
does the potato serve as an example of the complexity of the Columbian
Exchange's legacy?
DOK 2 | CRM
B-2
A) The potato's failure in Ireland
proved that New World crops were inferior to European grains and should not
have been introduced
B) The same crop that fed European
populations and fueled their growth also—through over-reliance on a single
variety—caused approximately one million deaths and one million emigrations in
the Irish Potato Famine, illustrating that the Exchange's consequences were
neither simply positive nor simply negative
C) The potato was originally an
African crop introduced to the Americas by enslaved workers and then
reintroduced to Europe through the Exchange
D) The Irish Potato Famine was caused
primarily by British colonial policy rather than by the potato's biological
vulnerability to disease
SECTION B — MAIN IDEA & CENTRAL
THEME: MULTIPLE-CHOICE (2 pts each)
Questions 6–10: Identify main ideas, analyze
structure, evaluate summaries, and determine central themes.
6. Which sentence BEST expresses the
main idea of paragraph two?
DOK 2 | CRM
B-2
A) Horses were the most important
item transferred from the Old World to the Americas because they transformed
Indigenous cultures
B) The Old World's transfer of
domesticated animals and especially infectious diseases to the Americas
initiated an ecological and demographic catastrophe for Indigenous peoples with
no precedent in recorded history
C) European settlers deliberately
introduced diseases to Indigenous populations as a weapon of warfare and
conquest
D) The introduction of horses
benefited Indigenous peoples of the Plains so significantly that it offset the
negative consequences of European colonization
7. What is the central theme of the
passage as a whole?
DOK 3 | CRM
C-3
A) Christopher Columbus's voyages
were more important for their biological and ecological consequences than for
their political or economic effects, and those consequences—simultaneously
transformative and catastrophic—produced a legacy that remains contested and
unresolved today
B) European colonialism was solely
responsible for the suffering of Indigenous and African peoples, and the
Columbian Exchange is primarily a story of European violence
C) The most important consequence of
the Columbian Exchange was the global spread of food crops that improved
nutrition and increased human population worldwide
D) Alfred Crosby is the most
important historian of the modern era because his conceptual framework of the
Columbian Exchange transformed the study of global history
8. How does the author use paragraph
four to complicate the narrative established in paragraphs two and three?
DOK 3 | CRM
C-3
A) Paragraph four provides additional
examples of plants and animals transferred between hemispheres, extending the
inventory begun in earlier paragraphs
B) By introducing McNeill's argument
that the Exchange was asymmetrical and inseparable from slavery and conquest,
paragraph four disrupts a neutral or balanced reading of the transfer of
biological goods—reframing the Exchange as a process of power and exploitation
rather than simply an ecological event
C) Paragraph four contradicts
paragraphs two and three by arguing that disease and food crops were less
significant than the economic consequences of the Exchange
D) Paragraph four introduces a
competing scholarly view that the Columbian Exchange never actually occurred as
Crosby described it
9. A student summarizes the passage:
"The Columbian Exchange was when Columbus brought plants and animals
between the Old World and New World." Identify THREE critical omissions in
this summary and explain why each omission is essential to an accurate
understanding of the passage's central theme.
DOK 4 | CRM
D-4
A) The summary is adequate for a
basic understanding; the omissions are minor details that do not affect
comprehension of the main idea
B) The summary omits (1) the
catastrophic disease-driven demographic collapse of Indigenous populations; (2)
the inseparability of the Exchange from the Atlantic slave trade and systems of
exploitation; and (3) the passage's central argument that the Exchange's legacy
is complex, contested, and still-unfolding—all of which are essential to the
theme of historical complexity and asymmetrical consequences
C) The summary should include the
specific names of all food crops transferred from the Americas to Europe, since
these are the passage's most important key details
D) The summary is insufficient only
because it fails to mention Alfred Crosby, whose naming of the event is the
passage's most important contribution to historical knowledge
10. The author writes in the final
paragraph that Crosby's insight has been "validated by subsequent
scholarship." What function does this concluding statement serve in
relation to the passage's central theme?
DOK 4 | CRM
D-4
A) It undermines the passage's
central theme by suggesting that the Columbian Exchange is now a closed
historical question with no contemporary relevance
B) It reinforces the passage's
argument by establishing scholarly consensus behind the biological/ecological
framework for understanding the Exchange—affirming the analytical lens through
which the passage has presented its evidence and implicitly endorsing Crosby's
"most powerful conceptual framework" as the appropriate way to
understand global history
C) It is a standard academic citation
with no specific relationship to the passage's central theme
D) It suggests that Crosby's original
argument was wrong and has been significantly revised by subsequent historians
SECTION C — PASSAGE SUMMARY (10 pts)
DOK 2
| CRM B-2 |
Write a 6–7 sentence objective summary. Include: the passage's central
claim, the most important key detail from each major section, and the central
theme. Use your own words exclusively.
SECTION D — SHORT ANSWER (10 pts each)
11. The passage states that the
Columbian Exchange was "bidirectional" but also, according to
McNeill, "not a transaction between equals." Analyze the tension
between these two characterizations. In what sense was the Exchange bidirectional,
and in what sense was it asymmetrical? Use specific key details from at least
two paragraphs to support your analysis. (DOK 3 | CRM C-3)
DOK 3 | CRM
C-3
12. The author introduces the Irish
Potato Famine in paragraph five as evidence that the Exchange's legacy is
"neither simply positive nor simply negative." Evaluate this
rhetorical strategy. Does the Potato Famine example effectively demonstrate complexity,
or does it introduce a complication that belongs in a different discussion than
the Exchange itself? Defend your position with evidence. (DOK 4 | CRM D-4)
DOK 4 | CRM
D-4
SECTION E — EXTENDED RESPONSE (20 pts)
DOK Level 4
| CRM D-4 |
Minimum 12 sentences. AP-track academic register.
13. Main Idea & Key Details
Synthesis: The passage argues that understanding the Columbian Exchange
requires accepting that its consequences were simultaneously transformative,
asymmetrical, and still-unresolved. In a well-organized extended response: (1)
state the passage's central theme with precision; (2) identify and analyze at
least FIVE key details drawn from at least FOUR paragraphs that together
support the complexity of that theme; (3) evaluate the author's structural
decision to move from ecology (paragraphs 1–3) to power analysis (paragraph 4)
to legacy and ambiguity (paragraph 5) to scholarly validation (paragraph
6)—explain how this structure serves the central theme; and (4) construct your
own argument about whether the Columbian Exchange is best understood as a
biological event, a political event, or something that requires both frameworks
simultaneously.
DOK 4 | CRM
D-4
SECTION F — VOCABULARY IN CONTEXT (5 pts each)
14. The word "demography"
appears in paragraph one in the phrase "permanently altered the ecology,
demography, and economy." In context, "demography" most
precisely refers to —
DOK 2 | CRM
B-2
A) the political and governmental
structures of a society
B) the study and statistical
characteristics of human populations, including size, growth, and distribution
C) the geographic and physical
landscape of a region, including soil composition and climate
D) the economic and trade
relationships between nations or continents
15. The word "asymmetry"
(paragraph 4), used to describe the Exchange, is a Tier 3 academic term. In
this context, "asymmetry" most precisely means —
DOK 3 | CRM
C-3
A) a transaction that took place over
an extended period of time rather than in a single moment
B) a relationship or exchange in
which the two sides are unequal in power, benefit, or consequence
C) a scientific imbalance in the
ecological systems of the Old and New Worlds prior to contact
D) a mathematical error in
historians' calculations of population loss and food crop production
ASSESSMENT SCORING GUIDE
|
Section |
Points Possible |
Points Earned |
DOK Level |
CRM Cell |
|
MC — Key Details (×5) |
20 |
___ |
1–3 |
A-1 / B-2 / C-3 |
|
MC — Main Idea / Theme (×5) |
20 |
___ |
2–4 |
B-2 / C-3 / D-4 |
|
Short Answer (×2) |
20 |
___ |
3–4 |
C-3 / D-4 |
|
Extended Response |
20 |
___ |
4 |
D-4 |
|
Vocabulary (×2) |
10 |
___ |
2–3 |
B-2 / C-3 |
|
Passage Summary |
10 |
___ |
2 |
B-2 |
|
TOTAL |
100 |
___ |
— |
— |
Grade 3
— The Underground Railroad
Section A — Key Details MC
(Questions 1–5):
Q1: B
Q2: C
Q3: B
Q4: C
Q5: B
Section B — Main Idea /
Theme MC (Questions 6–10):
Q6: A
Q7: C
Q8: B
Q9: B
Q10: B
Section F — Vocabulary
(Questions 14–15):
Q14: B
Q15: C
Open-Response
Scoring: Apply DOK/CRM Rubric below.
Grade 4
— The Dust Bowl
Section A — Key Details MC
(Questions 1–5):
Q1: B
Q2: A
Q3: B
Q4: C
Q5: B
Section B — Main Idea /
Theme MC (Questions 6–10):
Q6: B
Q7: C
Q8: B
Q9: B
Q10: B
Section F — Vocabulary
(Questions 14–15):
Q14: B
Q15: B
Open-Response
Scoring: Apply DOK/CRM Rubric below.
Grade 5
— Gutenberg's Printing Press
Section A — Key Details MC
(Questions 1–5):
Q1: B
Q2: C
Q3: B
Q4: B
Q5: B
Section B — Main Idea /
Theme MC (Questions 6–10):
Q6: B
Q7: B
Q8: B
Q9: B
Q10: B
Section F — Vocabulary
(Questions 14–15):
Q14: C
Q15: B
Open-Response
Scoring: Apply DOK/CRM Rubric below.
Grade 6
— The Columbian Exchange
Section A — Key Details MC
(Questions 1–5):
Q1: B
Q2: C
Q3: B
Q4: B
Q5: B
Section B — Main Idea /
Theme MC (Questions 6–10):
Q6: B
Q7: A
Q8: B
Q9: B
Q10: B
Section F — Vocabulary
(Questions 14–15):
Q14: B
Q15: B
Open-Response
Scoring: Apply DOK/CRM Rubric below.
Grade 7
— Women's Suffrage
Section A — Key Details MC
(Questions 1–5):
Q1: B
Q2: B
Q3: B
Q4: B
Q5: B
Section B — Main Idea /
Theme MC (Questions 6–10):
Q6: B
Q7: B
Q8: B
Q9: B
Q10: B
Section F — Vocabulary
(Questions 14–15):
Q14: B
Q15: C
Open-Response
Scoring: Apply DOK/CRM Rubric below.
Grade 8
— The Space Race
Section A — Key Details MC
(Questions 1–5):
Q1: B
Q2: B
Q3: B
Q4: B
Q5: B
Section B — Main Idea /
Theme MC (Questions 6–10):
Q6: B
Q7: B
Q8: B
Q9: B
Q10: B
Section F — Vocabulary
(Questions 14–15):
Q14: C
Q15: B
Open-Response
Scoring: Apply DOK/CRM Rubric below.
DOK
/ CRM Open-Response Rubric
|
Score |
DOK |
Summary / Key Detail Accuracy |
Main Idea / Theme Analysis |
Register & Citation |
|
18–20 |
4 — Extended |
Complete, precise,
text-specific; no omissions |
Evaluates; synthesizes
across multiple paragraphs |
Tier 3 vocabulary; formal
register; cited accurately |
|
14–17 |
3 — Strategic |
Mostly accurate; minor
omissions |
Analytical; explains rather
than retells |
Tier 2; generally formal;
partial citations |
|
9–13 |
2 — Skills |
Partially accurate; some
paraphrase errors |
Some analysis; mixes summary
and interpretation |
Mixed register; general
references to text |
|
0–8 |
1 — Recall |
Inaccurate or absent |
Retelling only; no
analytical claim |
Informal; no textual
evidence |
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