Mark each statement if it was part of sumerian farming and trading.
a.
levees held back the annual floods of the tigris and euphrates rivers.

b.
surplus barley and wheat could be traded for other things.

c.
lumber, stone, and gold produced in sumer could be traded for food.

A. Levees held back the annual floods of the Tigris and Euphrates Rivers.

B. Surplus barley and wheat could be traded for other things.

Explanation:

The Sumerians were a group of people who lived in ancient Mesopotamia, nowadays southern Iraq. This is the first culture that we know of in Mesopotamia, which is considered the "cradle of civilization." Therefore, they were one of the first civilizations in the world. Sumerian agriculture and trade were very developed. Farmers were able to grow grain and other crops through the use of levees that held back the floods. They also developed a system of irrigation.

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.