Look the answer up on google and itll tell you .. Or safari
Answer:
Treaty of Friendship, Cooperation, and Mutual Assistance
Explanation:
Is a collective defence treaty signed in Warsaw, Poland between the Soviet Union and seven Eastern Bloc satellite states of Central and Eastern Europe in May 1955, during the Cold War.

The answer is...
B. Northeast
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Answer:
no because we are removing the power from our government not giving it more
Explanation:
um im pretty sure this is right but....... if not sorry
They were able to unite because the Persian invasion of Greek mainland was a common threat for all, so they united to stop it. This was impossible before because Persia was not considered to be such a major threat.