Use the maps to answer the following question:

A map of the Indus River Valley civilizations is shown, including Mohenjo-Daro, Lothal, Mehrgarh, and Harappa. They are situated near the Indus River, in northwestern India. Another map of Shang civilizations in ancient China is shown, the settlements represented by purple shading, primarily along the Yellow River.
Image 1: © 2012 MM
Creative Commons, Attribution-Share Alike 3.0 Unported

Image 2: © 2012 Saperaud
Creative Commons, Attribution-Share Alike 3.0 Unported

These maps show ancient settlements in India and China. Which of these statements describes a necessary condition for ancient river civilizations to develop?

The presence of nearby seas allowed the region's city-states to trade with other regions.
The silt from the rivers created fertile soil that allowed farmers to plant crops successfully.
Abundant rainfall along the coasts made these regions excellent for farming.
The rivers made it easier to protect the region's city-states from invaders.

1 answer

The correct statement that describes a necessary condition for ancient river civilizations to develop is:

The silt from the rivers created fertile soil that allowed farmers to plant crops successfully.

This highlights the significance of river valleys, where silt from flooding rivers contributes to fertile land, supporting agriculture, which is essential for the development of stable and prosperous civilizations.