I'd say D because it has do more with the October Revolution and Commies
Answer: B
Explanation: the Tigris river was essential for trade and travel, the Tigris Euphrates river system was basically centered in Mesopotamia
I think it is known as the Middle Ages.
Not too sure
Answer:
An empire is an unequal relationship between a core state and a periphery of one or more states controlled from the core. On the simplest level, control means military occupation or other formal political intervention, but it can also cover informal economic or cultural influence.
Lewis and Clark ended their expedition on March 23rd 1806
