What are TWO central ideas of this text of Commonlit assignment Reconstruction?

This text discusses Reconstruction, or the period of rebuilding following the Civil War. The Civil War lasted from 1861 to 1865 and was fought between the northern states, known as the Union, and rebellious southern states, known as the Confederacy. The Union won the war and had to decide how to bring the country back together again, leading to the controversial Reconstruction Era.

Explanation:

pls try