What were the purposes of salt? check all of the boxes that apply.

1,2, and 4

Explanation: To achieve peace,

To protect the security of the United States,

To stop the nuclear arms race

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.