Answer:
Louisiana Purchase, Texas Annexation, the Mexican Cession, the Erie Canal, the Homestead Act, the transcontinental railroad and the California Gold Rush are some examples of how the US started expanding its territory in the 1800s.
Explanation:
true
A if not D choose whichever you think is more reasonable between A and D
I think that Free African Americans were denied because they were jealous of them and they didnt want them to take over California .