Which readily available water resource was crucial to the development of mesopotamia?
a. the red sea and the black sea
b. the tigris river and the euphrates river
c. the red sea and the persian gulf
d.
the mediterranean sea and the indus river

B. the Tigris River and the Euphrates River

Explanation:

the region's semiarid climate didn't have much rainfall, with less than ten inches annually. This initially made farming difficult. the Tigris and Euphrates provided a source of water that enabled wide-scale farming.

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).