Help How did trade help the Olmecs?

Explanation:

Trading helped the Olmec build their urban centers of San Lorenzo and La Venta. These cities, however, were used predominantly for ceremonial purposes and elite activity; most people lived in small villages. Individual homes had a lean-to—sort of like a garage shed—and a storage pit for storing root vegetables nearby.

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.

idk if you found them already or not but you probably did but the one closer to sea level is raleigh.