KnowraUnited States territorial expansionLinked fromLinked fromThe 9 pages that link to United States territorial expansion, each with the reason it gives.All 9Narrower topic 8Compared with 1United StatesNarrower topic: Expansion altered the country's borders while intensifying disputes over Indigenous sovereignty and slavery.American frontierNarrower topic: The frontier's westward movement followed the nation's expanding territorial boundaries.Lewis and Clark ExpeditionNarrower topic: The expedition formed part of the early republic’s drive to understand and extend its claims westward.Adams–Onís TreatyNarrower topic: The agreement advanced U.S. expansion while setting limits on its claims in the West.Texas annexationNarrower topic: Texas's incorporation was a major step in the country's nineteenth-century expansion.Era of Good FeelingsNarrower topic: Postwar growth intensified disputes over slavery and the balance between regions.Newlands ResolutionNarrower topic: The annexation made Hawaiʻi part of the United States during an era of overseas expansion.Robert R. LivingstonNarrower topic: The Louisiana Purchase became a major turning point in the nation’s westward growth.