What role did the tigris and euphrates rivers play in the development of civilization?

a. they enriched the soil and farmers grow food surpluses.
b. they enabled the people of mesopotamia to become sea traders.
c. they provided enough water for farmers not to have to irrigate their crops.
d. they isolated the people of mesopotamia from other regions.

a. They enriched the soil and helped farmers grow food surpluses.

Explanation:

Since ancient times, civilizations have been able to choose the location of their settlements, either because of the weather conditions, because of the ecosystem of the place or simply because of the convenience offered, and in this sense, both the Tigris River and the Euphrates River have certain characteristics. what makes them stand out.

When you have very close bodies of water, it is easier to establish yourself, since you have a permanent source to harvest and, therefore, a means by which societies can subsist. It is no coincidence that one of the first sedentary civilizations was among this system of rivers and although many things have changed over the years, it remains important today.

the federalist party which advocated strong centralization dominated the united states government till 1800. so 1800 election transformed the power from one party to another party for the first time and was thus a turning point in american history. so jefferson called it "revolution of 1800".

explanation:

the answer would be c