How Did Newly Independent  African Nations Respond to Decolonization

How did newly independent  African nations respond to decolonization?

A) They allowed Europeans who wanted to, to remain in the country.
B) They did not change the European-imposed borders, even though these were problematic.
C) They made an effort to reestablish the tribal kingdoms that had been in place when the Europeans arrived.
D) They usually chose leaders who had never lived in Africa during the colonial era.
E) They tried to hold on to the multiparty, democratic systems inherited from the Europeans.