Answered

Many greek city-states encouraged migration to areas outside of Greece during the 8th and 7th centures B.C in order to
a. Obtain new sources of raw materials B Spread their political and religious ideas to other lands
c. Establish bases for commercial and military expansions D Ease discontent caused by a maldistribution of land and an increase in poverty

Answer :

Many greek city-states encouraged migration to areas outside of Greece during the 8th and 7th centuries B.C in order to "c. Establish bases for commercial and military expansions" which the Greeks desperately needed.