Answer:The answer is the Ku Klux Klan (KKK).
Explanation: The radical republican's goal during the reconstruction era was to help African Americans achieve equality by guaranteeing their rights to vote in the south.
It can't be Northerners as they opposed slavery and the oppression of African Americans.
The Freedman's bureau actually helped slaves gain their freedom.
Out of all the choices only the Ku Klux Klan were for slavery and oppressing African Americans.
World War 1.
Many blacks left southern states during WW1 and moved to big northern cities to work in war industries.
More went to New York city than to any other,and after the war there a lot of blacks living in Harlem who were literate and artistic.
The chopper made transportation of military personnel in the war hot areas easier as it could land in any place.
The Huey helicopter also rendered trench battles obsolete. A symbol of the USA military, the chopper made rescue missions possible in the battle line.It also helped to harness a more tactical air combat.
