The incident at Three Mile Island left many people in doubt about the

Three Mile Island

The incident here left many people with great doubt about the safety of nuclear energy.

(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.