What were two major differences between the civilizations of greece and mesopotamia?

In 100,000 years, the rotation of earth will be slower by how many seconds?

Abrief, "first-step" presentation of a work to be completed is called a

What was the name of the theory that said that if one country in a region fell to communism, others would surely follow? 1) domino theory 2) arms race 3) brinkmanship 4) containment theory