How did the development of irrigation systems improve living conditions?
a. it gave people a surplus of food.
b. it made people switch from hunting to herding.
c. it allowed people to move out of town onto farms.
d. it made people less dependent on trade.

on this day in 1833, president andrew jackson announces that the government will no longer use the second bank of the united states, the country's national bank. a national bank had first been created by george washington and alexander hamilton in 1791 to serve as a central repository for federal fund

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation: