Which geographic factors contributed to the decline of Sumer? Choose all answers that are correct.

A. Irrigation of the crops led to salinization of the soil.
B. Sumer was located on a flat plain that provided no natural barriers to invasion.
C. Mountains made agriculture difficult.
D. The land became too swampy to grow adequate crops.

**It's A **Irrigation was overused, the soil didn't get any rest (crop rotation is a younger invention), the result was salinization of the soil, which led to decline of Sumer.

Answered by mackiemesser | 2024-06-10

Irrigation of the crops led to salinization of the soil.
Sumer was located on a flat plain that provided no natural barriers to invasion. ;

Answered by 9481528 | 2024-06-15

The geographic factors contributing to the decline of Sumer include salinization from irrigation and the lack of natural barriers for defense against invasions. Therefore, the correct choices are A and B. Mismanagement of water resources and environmental challenges played critical roles in this ancient civilization's decline.
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Answered by 9481528 | 2024-09-27