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.

they consider la nina a warm place and el nino a cool place but all aoround its pretty neatrual

the russian revolution of 1917 involved the collapse of an empire under tsar nicholas ii and the rise of marxian socialism under lenin and his bolsheviks.