What was the purpose of containment policies adopted by the U. S. starting in 1947?
A. To eradicate communism in Europe forever.
B. To stop the spread of communism to other parts of Europe and
the world.
C. To return to a tradition of isolationism and non-intervention in
European affairs.
D. To isolate Allied-occupied Germany from Soviet influence.

B

Explanation:

As the word containment suggests, it was a policy of containing communist both in Europe and in other parts of the world, for example South East Asia.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration