What caused the Berlin blockade?

The main cause of the Berlin Blockade was the Cold War, which was just getting started. Stalin was taking over eastern Europe by salami tactics and Czechoslovakia had just turned Communist (March 1948). ... Stalin wanted to destroy Germany, and the USSR had been stripping East Germany of its wealth and machinery.

Explanation:

1) the answer is b

senators serve a six-year term; representatives serve a two-year term, making them more responsive to (and responsible for) voter confidence.

2) the answer is d

to serve as president, one must:   -be a natural-born u.s. citizen of the united states;   be at least thirty-five years old;   be a resident in the united states for at least fourteen years.

3) the answer is a

ella,because it is constitutionally eligible

4) the answer is c: the u.s president