The massive carved stone heads found at saint lorenzo and other ancient olmec sites tell us that the olmecs (5 points)

Had a complex society with separate settlements and different rulers.

Explanation:

The Olmecs were the oldest advanced civilization in Mesoamerica. They lived in south-central Mexico, and flourished between 1500 BCE and 400 BCE. One of the most remarkable and well-known features of this culture is the creation of massive stone heads. These have been found in various locations across Mexico. Such massive projects and extensive territory suggests that the Olmecs had a complex society with separate settlements and different rulers.

the foundation of greek city-states: following the fall of the mycenaean civilization in the 10th century bc, the area surrounding the empire went through its own mini dark ages. answer and explanation

the treaty of brest-litovsk was a peace treaty signed on 3 march 1918 between the new bolshevik government of russia and the central powers (german empire, austria-hungary, bulgaria, and the ottoman empire), that ended russia's participation in world war i.