Answer:
B. the Tigris River and the Euphrates River
Explanation:
the region's semiarid climate didn't have much rainfall, with less than ten inches annually. This initially made farming difficult. the Tigris and Euphrates provided a source of water that enabled wide-scale farming.
Answer:
It was extramly dangerous to travel by wagon, there was the threat of bandits, native american tribes, and Buffalo, plus added diseases and weather conditions, when the train was invented and used for civilian use after the American civil war, railways were built from the east and mid-west to the west, they were deamed more safe and it was a faster way to travel
Answer:
It left the power to regulate slavery, as well as most powers, to the individual states. After their experience with the British, the colonists distrusted a strong central government. The new national government consisted solely of a Congress in which each state had one vote.
Explanation: