1 Ancient China, now the Yellow River Basin, mainly includes Henan, Shanxi, Shaanxi, Shandong, Hebei, Hubei, Sichuan and other Central Plains regions.
2 Ancient Egypt: Egypt is located in Northeast Africa. It borders the Mediterranean Sea to the north, the Red Sea to the east, Nubia (now Ethiopia and Sudan) to the south, Libya to the west, and belongs to the Nile River Basin.
3 Ancient Babylon: Located in the Mesopotamian Plain, roughly within the territory of today's Republic of Iraq. "Mesopotamia" is ancient Greek, meaning "the place between two rivers", so it is also called the Mesopotamia. The two rivers are the Euphrates and the Tigris.
4 Ancient India: Since this civilization first originated in the Indus River Basin and later gradually spread to the Ganges River Basin, in terms of geographical scope, Ancient India generally included the three countries of today's India, Pakistan and Bangladesh. territory.