Which of the following statements best explains why Stalin blockaded West Berlin? Select all that apply.
a) Stalin wanted to trigger a war with the western Allies.
b) Stalin had removed resources from East Berlin and the economy was suffering so he wanted to gain control of West Berlin.
c) Stalin wanted to control all of Germany and the Berlin blockade was the first step in achieving that.
d) Stalin believed he had a right to Berlin because Berlin was located in the USSR's occupation zone.