Select the locations of the world's earliest river valley civilizations.

Answer 1

The locations of the world's earliest river valley civilizations are:

1. Mesopotamia: Located in present-day Iraq, between the Tigris and Euphrates rivers.
2. Egypt: Located along the Nile River in present-day Egypt.
3. Indus Valley: Located in present-day Pakistan and northwest India, along the Indus River.
4. Yellow River (China): Located in present-day China, along the Yellow River.
5. Mesoamerica: This includes the Olmec and Maya civilizations, located in present-day Mexico and Central America, along various rivers such as the Usumacinta and Grijalva rivers.