How did Manifest Destiny influence U.S. expansion and Native American policy?

• A. Promoted peaceful coexistence with Native nations and no removals.
• B. Limited expansion to the Atlantic coast only.
• C. Encouraged treaties that undermined Native autonomy but avoided removals.
• D. Justified westward expansion and policy toward Indigenous peoples, including removals and treaties that undermined Native autonomy.

Answer: (D)

Manifest Destiny was the belief that the United States was meant to expand across the continent, so expansion became seen as both inevitable and proper. That mindset not only pushed settlers westward into new territories but also shaped how the government dealt with Indigenous peoples. As settlers moved beyond the Mississippi, policies often backed removal of Native nations from their homelands to make room for settlers and new states. Treaties were frequently used to justify taking land or redefining sovereignty, even while promising certain protections or boundaries; and later assimilation efforts sought to erode tribal autonomy through acts like the Dawes Act, which broke up communal lands.

So, this idea provided the rationale for both pushing west and pursuing policies toward Indigenous peoples that included removals and undermining native authority. The other options miss the mark because they either imagine peaceful coexistence with no removals, limit expansion to the eastern seaboard, or suggest that treaties avoided removals—none of which align with how expansion and Native policy actually developed under Manifest Destiny.