Explains the US territorial growth during the first Half of the 19th century

The 19th Century was a time called Manifest Destiny. The people thought that they were destinied to settle the entire continent. This caused a lot of moving around.

Explanation:

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the government paid religious orders to provide basic education to native american children on reservations. in the late 19th and early 20th centuries, the bureau of indian affairs (bia) founded additional boarding schools based on the assimilation model of the off-reservation carlisle indian industrial school.

d) post-world war i