The correct answers are B) Nile, C) Tigris and Euphrates, E) Yellow, F) Indus.
The four river valleys that gave birth to early civilizations were the Nile, Tigris and Euphrates, Yellow, and Indus.
ANcient civilizations prospered due to agriculture and water. During the Agriculture Revolution, humans stop being Nomads and started to settle in next to the Rivers for the great advantages it represented. That was the case of Sumer-Mesopotamia, that established in the middle of the Tigris and Euphrates Rivers. Or people in China next to the Yellow River. Another good example was the Egyptians that established settlements next to the Nile River and flourished when they learned to grow crops.
