What effect did the invention of irrigation systems have on both ancient Egypt and Mesopotamia? A.

It reduced farmers’ dependence on aid from the pharaoh.
B.

It brought fresh-water supplies to desert areas.
C.

It helped to cause flooding in the areas around the rivers.
D.

It increased trade across the Mediterranean Sea.

pls answer because I have a test about this question..

Why did the federal government choose to give each tribal member a 25-year deed to the reservation land? this was the life expectancy of native americans at this time, and the government wished to grant rights for only a single generation. they considered this to be enough time to keep the area calm before they could take the land back again for sale. the united states government believed that the nutrients from the land would be depleted by the end of the deed. the government believed this would be enough time for the tribal members to become self-reliant and adapt to the farming lifestyle.

What caused the comanche kiowa raiding? a. gadsden purchase b. battle of alamo c. bear flag revolt d. settlement of texas

Why did congress pass the judiciary act of 1789? a. to create federal courts below the supreme courtb. to amend the constitutionc. to establish the office of the presidentd. to set up agencies in the executive branch