Respuesta :
American history is most closely associated with the Civil War era.
The American Civil War was began between the US and the Confederate States of America, a group of twelve southern colonies that broke away from the Union in 1860 and 1861. The main cause of the war was a long-standing debate about the system of slavery.
Learn more:
https://brainly.com/question/1476116?referrer=searchResults
