Answer:
Option: C. Radicals
Explanation:
The former Confederates had to swear an oath of allegiance after the Civil War. It promoted by Radical Republicans to prevent the political activity of Confederate veterans and supporters in the South. A confederate person had to swear to support and defend the Constitution of the United States.
Farmers mastered irrigation early, providing more crops than they needed to support the population.
<h3>Answer:</h3><h2>It supported establish trade relationships and supported the spread of Islam.</h2>
<h3>Explanation:</h3>
By going to Mali, Mansa Musa supported spread the thoughts of Mali a way that represented the strength and prosperity of the empire, thus he yielded Mali an even bigger world power.
He further helped spread Islam to not just amongst the natives of the nation of Mali, but further between others, for they perceived Mali as a role model so to speak and when the most dominant man in the world recommends something, several others will support in connection.
