What mistake was made that led to the Berlin Wall coming down

answer:

After the Politburo deposed Erich Honecker in an effort to reduce the repressive image of the regime, Günter Schabowski became East Germany's press spokesman.

Explanation:

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.

i would say your answer is a)

sorry if im wrong