To avoid one person gaining all power - NO absolutism!
The correct answer here is the option B.
The March on Washington occurred August in the year 1963. The purpose of this action was to gather support for the passing of the Civil Rights act. About 250.000 people were a part of the march and it was during this ceremony that Martin Luther King Jr. delivered his famous I Have a Dream speech .
D) economic and political theories developed in the eighteenth and nineteenth centuries
This is your answer
Guinea-Bissau, Angola, and Mozambique gained independence from Portugal.The Soviet Union and the Soviet Bloc broke apart.