Answer:
The Euphrates River
Explanation:
The Euphrates River is one of the longest and most important rivers in Western Asia. It is one of the two defining rivers in Mesopotamia. The other is the Tigris. In ancient times, these rivers were very important because they provided water to grow crops. Now, the Euphrates River is significantly smaller than it was in the past due to a two-year drought and misuse by farmers.
