What region did the Union fight for?

It was fought between the secessionist Southern states, called the Confederacy, and the remaining parts of the United States, called the Union. The Union consisted of the Northern states, as well as all the states and territories of the West with the exception of Texas.

answer; (a) he was a u.s senator for 38 years;

answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.