Why did marcus garvey call for black people to build their own businesses

The belief that war often drives civil modifications to a society is based upon the evidence that in times of external conflict, a society is forced to abandon long held discriminatory values to:

When president johnson vetoed a law that would extend the freedmen’s bureau, congress reacted by supporting the veto and closing the freedmen’s bureau. writing a new law to show support for the black codes. overriding the veto and expanding the agency’s powers. drafting a law to prevent african americans from voting.

Approximately how many americans, from both the north and the south, were killed in battle during the civil war?