What common Greek architectural feature held up temple roofs? A
domes

B
columns

C
turrets

D
arches

columns

Explanation:

columns hold up roofs?

also greeks are famous for columns

a.   it resulted in widespread unemployment.

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.