Why was the house of burgesses established

Need on these last 2 questions on my social studies homework 5 and 6 then i’m done with the homework

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.

What effect did ww11 have on empires that had been created by european nations