Oklahoma Social Studies 8.C.9
Standard Cluster
Examine the political, economic, social, and geographic changes that occurred during the period of westward movement. Examine multiple perspectives on the justification for and impact on westward expansion and analyze the influence of immigration. Explain how the fur trade provided economic incentive for early exploration of the West including the crucial role played by traders and frontiersmen (e.g., Jedediah Smith, John C. Fremont, Kit Carson) in transcontinental migration (e.g., mapping of vast territory, establishing trade routes and relations with Native peoples). 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. Explain how the idea of Manifest Destiny influenced migration by identifying push and pull factors impacting the settlement of western territories. Analyze the impact of the waves of immigration from Northern Europe on settlement patterns. Analyze Alexis de Tocqueville’s claim regarding the concept of American exceptionalism and identify ways in which America has been an “exception to the rule” (e.g., stability, realizations of liberty and civil equality, prosperity, innovation). Analyze the territorial growth of the United States of America and the consequences of westward expansion. Summarize the series of events and the processes used to annex Texas, as well as acquire the Mexican Cession and the Gadsden Purchase. Describe the impact of the Treaty of Guadalupe Hidalgo on Mexican Americans (e.g., United States of America citizenship, displacement and land loss). Describe the continued political pressure to maintain a balance of free and slave states. Compare the motivations and experiences of individuals and groups who seized opportunities of the West, including those engaged in the California Gold Rush, the settlement of Oregon, and the Mormon migration. Describe the impact of westward migration on American Indian culture, homelands, Tribal sovereignty, and the growing sectional tensions regarding the expansion of slavery in new territories.
Oklahoma Academic Standards for Social Studies (2026)
Cluster contents
Standards in This Cluster
8.C.9 is a cluster heading. These are the individual standards under it.
- 8.C.9.1
Examine multiple perspectives on the justification for and impact on westward expansion and analyze the influence of immigration.
- 8.C.9.1.A
Explain how the fur trade provided economic incentive for early exploration of the West including the crucial role played by traders and frontiersmen (e.g., Jed...
- 8.C.9.1.B
Define the concept of Manifest Destiny including its belief in the inevitable spread of American institutions (e.g., religion, government, culture) and analyze ...
- 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.D
Analyze the impact of the waves of immigration from Northern Europe on settlement patterns.
- 8.C.9.1.E
Analyze Alexis de Tocqueville’s claim regarding the concept of American exceptionalism and identify ways in which America has been an “exception to the rule” (e...
- 8.C.9.2
Analyze the territorial growth of the United States of America and the consequences of westward expansion.
- 8.C.9.2.A
Summarize the series of events and the processes used to annex Texas, as well as acquire the Mexican Cession and the Gadsden Purchase.
- 8.C.9.2.B
Describe the impact of the Treaty of Guadalupe Hidalgo on Mexican Americans (e.g., United States of America citizenship, displacement and land loss).
- 8.C.9.2.C
Describe the continued political pressure to maintain a balance of free and slave states.
- 8.C.9.2.D
Compare the motivations and experiences of individuals and groups who seized opportunities of the West, including those engaged in the California Gold Rush, the...
- 8.C.9.2.E
Describe the impact of westward migration on American Indian culture, homelands, Tribal sovereignty, and the growing sectional tensions regarding the expansion ...
Teacher's field guide
What This Cluster Means
What Students Need to Do
- Students map how fur traders, settlers, and U.S. leaders changed western routes and borders. They compare why gold seekers, Oregon settlers, Mormon migrants, and Northern European immigrants moved west. They weigh claims about expansion against Native land loss, Mexican American displacement, and disputes over slavery.
What Mastery Looks Like
- Students can locate Texas, the Mexican Cession, and the Gadsden Purchase and explain how each came under U.S. control. They use evidence from O’Sullivan and Tocqueville to test claims about expansion and liberty against Native and Mexican American experiences. They explain how fur trade routes and immigration shaped settlement, and why new territory sharpened arguments over slavery.
Common Misconceptions
- Students may picture the West as empty land or assume everyone moved there for the same reason. They may think the Treaty of Guadalupe Hidalgo prevented Mexican Americans from losing land, or that acquiring territory settled the slavery debate.
How to Assess It
- Give students a map showing the Mexican Cession. Ask them to name one reason U.S. leaders wanted the land and one consequence for Mexican Americans or a Native nation.
Lesson moves
Ways to Teach It
Give pairs a blank 1840s map and colored pencils; have them mark fur trade routes, Texas, the Mexican Cession, and the Gadsden Purchase.
Post O’Sullivan’s expansion claim beside Tocqueville’s liberty claim; ask students to write whose experiences support or challenge each claim.
Deal role cards for a fur trader, gold seeker, Mormon migrant, Oregon settler, and Northern European immigrant; sort them by motive and destination.
Compare an 1846 Indian Territory map with a current Oklahoma Tribal nations map; identify one nation still exercising self-government today.
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