What role did the tigris and euphrates rivers play in the development civilization
a) they enriched the soil and farmers grow supplies surpluses.
b) they enabled the people of mesopotamia to become sea traders.
c) they provided enough water for farmers not to have to irrgate their crops.
d) they isolated the people of mesopotamia from other religions.

The correct answer is A. They enriched the soil and helped farmers grow supplies surpluses.

Explanation:

The Tigris and Euphrates are two rivers located in a zone that is called the Fertile Crescent in which the first civilization developed. This can be explained as the existence of this river in this area made the soil rich and therefore it was easier to grow different crops, also the water of the river was used to irrigate crops through canals, which allow people to stay in one area and become a civilization rather than being nomads and  created supplies surpluses that made people able to develop a culture and later trade products in land or through the river. Therefore, the role the Tigris and Euphrates river played in the development of civilization is that they enriched the soil and helped farmers grow supplies surpluses.

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

hope this !

have a great day!