After this event thousands of african american soldiers enlisted in the union military. a.
gettysburg
c.
bull run
b.
emancipation proclamation
d.
13th amendment, freeing the slaves

d.  13th Amendment, freeing the slaves

Explanation:

Taking into account the situation raised, we can affirm that the correct option is the thirteenth amendment, since it abolished slavery throughout the territory. At the time the amendment was approved, slavery was legal in Kentucky, Missouri, Maryland and New Jersey, but with the amendment this situation was over.

the dust bowl, otherwise known as the dirty thirties, was a huge dust storm that killed multiple (and i mean  multiple) farmer's crops, leaving them homeless, and foodless, and jobless. in california, there were 5.7 million residents, and the population shrank as mexicans were repatriated. however, when the dustbowl happened, a lot of people began to move to california. by 1940, 250,000 people had arrived. therefore, your answer would be  the population increased, massively.  i hope this !

explanation:

the answer is a) to be able to obey them.