Which of the following contributed to the increased economic and military power of the Sumerians?

The economic and military power of the Sumerians was partially due to the development of bronze to make weapons.
Explanation:
The Sumerians are thought the be the first civilization in the world. They developed their civilization in the river valley of the rivers Tigris and Euphrates, in what is known as the Fertile Crescent. The Sumerians were highly advanced for their time, and many things are attributed to them, which latter gave the basis for development of other civilizations in the region and further away.
One things that helped the Sumerians to become economically stronger and to have greater military power was the development of bronze. By developing bronze, the Sumerians were able to produce much better, stronger, and more efficient tools, which meant larger scale production of goods. Also, this meant creating better and more advanced weapons for the military, making them superior on the battlefield.
Learn more about the Fertile Crescent https://brainly.com/question/5481684
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