Oklahoma Social Studies 8.C.9.1.B
The Standard
- 8.C.9
- Examine the political, economic, social, and geographic changes that occurred during the period of westward movement.
- 8.C.9.1
- Examine multiple perspectives on the justification for and impact on westward expansion and analyze the influence of immigration.
Define the concept of Manifest Destiny including its belief in the inevitable spread of American institutions (e.g., religion, government, culture) and analyze claims made in such writings as The Great Nation of Futurity by John O’Sullivan.
Oklahoma Academic Standards for Social Studies (2026) · 8.C.9.1
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students explain Manifest Destiny as the belief that the United States was bound to expand west and spread its government, religion, and culture. They read John O’Sullivan’s essay to identify what he claimed about the nation’s future and how he argued for it.
What Mastery Looks Like
- A student can put O’Sullivan’s claim in their own words and point to a phrase in the essay that supports their reading. They can explain why calling expansion inevitable is a claim, not a proven fact.
Common Misconceptions
- Students may treat “destined” as a fact rather than an argument. They may think the belief was only about gaining land, not spreading U.S. institutions. They may mistake O’Sullivan’s view for the view of Native peoples whose lands faced expansion.
How to Assess It
- Exit ticket: Explain why O’Sullivan thought U.S. expansion was inevitable and name two institutions supporters expected to spread. Quote one phrase from his essay to support your answer.
Lesson moves
Ways to Teach It
Give pairs an 1840 North America map; have them draw westward arrows labeled government, religion, and culture, then mark each arrow as a prediction.
After reading O’Sullivan’s “nation of human progress” passage, ask students to write his claim in their own words and name a group he ignores.
Give teams cards with statements from the essay; have them sort each as a claim, a reason, or an assumption and explain one choice.
Use a local road expansion announcement; students underline predictions of progress and compare whose views it leaves out with O’Sullivan’s essay.
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Related Standards
- 8.C.9.2
Analyze the territorial growth of the United States of America and the consequences of westward expansion.
- OKH.C.3.3
Analyze the influence of the idea of Manifest Destiny on migrations into present-day Oklahoma.
- 8.C.9.1.C
Explain how the idea of Manifest Destiny influenced migration by identifying push and pull factors impacting the settlement of western territories.
- 8.C.9.1
Examine multiple perspectives on the justification for and impact on westward expansion and analyze the influence of immigration.
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