Answer:
D.irrigation ditches and canals
Explanation:
The Tigris and the Euphrates follow roughly parallel courses as they flow from the highlands of eastern Turkey through Syria and Iraq and into the Persian Gulf. The rivers flooded the area every spring when snow from nearby mountains melted and made its way into their currents. Little by little the cities that were adjacent to the rivers managed to produce enough food to trade with other settlements.
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<span>B. French kings abolished the French nobility</span>
Answer:
The three branches of the U.S. government are the legislative, executive and judicial branches. According to the doctrine of separation of powers, the U.S. Constitution distributed the power of the federal government among these three branches, and built a system of checks and balances to ensure that no one branch could become too powerful.
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