I believe the answer would be A. Levees held back and annual floods of the Tigris and Euphrates Rivers. And B. Surplus barley and wheat could be traded for other things.
<span>C, G, H, I, and J are the answers to your question
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D. Are selected base on the rules of patronage
The correct answer that would best complete the given statement above would be BELGIUM. Amid a series of ethnic uprisings in the Europe in the 1800s, BELGIUM was one of the few nations to gain independence. Hope this answer helps. Other choices of the given question above that you might have missed are <span>Czechoslovakia, Poland and Hungary. </span>
Answer:
so that one central authority could oversee all the various air and space projects
Explanation:
