WORLD HISTORY

Detailed explanation-1: -The earliest civilizations formed on fertile river plains. These lands faced challenges, such as seasonal flooding and a limited growing area. Geography What rivers helped sustain the four river valley civilizations?

Detailed explanation-2: -The first civilizations appeared in major river valleys, where floodplains contained rich soil and the rivers provided irrigation for crops and a means of transportation.

Detailed explanation-3: -Solution: In the early ages of human existence, the greatest civilisations existed near the river valleys. The rivers acted as a reliable source of water for agriculture and other human needs. The land beside the river was very fertile which facilitated agriculture, hence fulfilled the need of surplus food.

Detailed explanation-4: -Most ancient civilizations were formed around major rivers, especially when those led to the sea. Living far away from the rivers mostly meant tribes had to be nomadic. Rivers provide civilizations with a supply of fresh and clean water, which they can use for crops, animals, and themselves.

Detailed explanation-5: -Mesopotamia is thought to be one of the places where early civilization developed. It is a historic region of West Asia within the Tigris-Euphrates river system.