Question

how did the idea of the Manifest Destiny help push the expansion of the United States into Oregon, California, and the former Mexican territories

Answer 1

Manifest Destiny was stimulated by nationalism and an idealistic vision of The withdrawal of Spain and Russia left Oregon to the United States and Great Britain. of 1844 ultimately determined the extent of American territorial expansion. The Mexican government encouraged Americans to emigrate to Texas in an effort to keep the united states.