Why did the Greeks establish colonies outside of mainland Greece?

Supporters of using the atomic bomb at the end of world war ii believed that a japan might win the war if the bomb was not used. b americans were tired of war and the us should end it quickly. c russia was developing a bomb and the us needed to use it first. d japan was developing a bomb and the us needed to use it first.

Which group was responsible for determining the borders of african colonies and later countries

Brainliesttt !me : ) why were the eastern european countries attempting to break free of the soviet union?