Why did general oliver otis howard think the nation couldn’t let reconstruction fail

General Howard said that the Civil War was fought over the rights of former slaves. However, after the war, the former slaves were not guaranteed those rights. If blacks were going to be oppressed and treated badly, that would mean that Reconstruction had failed, and the war had been fought for nothing.

Explanation:

This is the sample answer from Edmentum-Clever.  I suggest changing a couple of words.  

advertising coaxes people to buy new products

one of the negative side effects were the economic losses the events of september 11th caused. many, many people lost their jobs as a result of a downturn in the economy after the terrorist attacks.