Respuesta :
Answer:
Territories obtained in the Mexican American War of 1848 caused further sectional strife over the expansion of slavery in the ante bellum period. ... The ideological seeds of the American Civil War, in turn, were sown during that conflict.
Explanation:
Answer:
the war was the westward expansion of the United States. All through the 19th century Americans believed it was their right to expand westward. At the time they believed they could conquer the people already living on the land and take it for the United States.
Explanation: