Answer:
The U.S wanted Mexico's land (AKA California and Arizona and etc..)
Explanation:
The U.S. Supreme Courthands down its decision on Sanford v. Dred Scott, a case that intensified national divisions over the issue of slavery. In 1834, Dred Scott, a slave, had been taken to Illinois, a free state, and then Wisconsin territory, where the Missouri Compromise of 1820 prohibited slavery
He was primarily focused on military success over cultural and economic prosperity.
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Marxism saw history as a series of class struggles.