PLAESE HURRY Which of the following were reasons for the Soviet Union’s collapse? i. Satellite nations declared independence.

ii. The Soviet Union could not compete economically with the West.

iii. Soviet citizens demanded political and economic reforms.

iv. The United States beat the Soviet Union in a violent battle at Stalingrad.

A.

i. and ii. only

B.

i. and iv. only

C.

iii. and iv. only

D.

i., ii., and iii.

Humans have built artificial levees along the mississippi river to protect themselves and their property from floods. however, these structures also modify inland and coastal regions by disrupting the natural flow of sediment. artificial levees along the mississippi river a. reduce the amount of sediment deposited on floodplains and increase the amount of sediment deposited at the river's mouth. b. increase the amount of sediment deposited on floodplains and decrease the amount of sediment deposited at the river's mouth. c. increase the amount of sediment deposited on floodplains and at the river's mouth. d. decrease the amount of sediment deposited on floodplains and at the river's mouth.