The massive carved stone heads found at saint lorenzo and other ancient olmec sites tell us that the olmecs

Answer;

Had a complex society with separate settlements and different rulers

Explanation;

The Olmec were the first major civilization in Mexico. They lived in the tropical lowlands on the Gulf of Mexico in the present-day Mexican states of Veracruz and Tabasco.

The Olmecs are one of the most fascinating civilisations in the Pre-Columbian Americas. They are easily recognised by their creative, enigmatic, and soulful artwork; They were the first to introduce ball-courts and they are candidates for the first writing and the initiation of the long-count

b. british workers

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.