How did the sumerians increase food production? select the two correct answers.
a.
they brought in rich soil from beyond mesopotamia.

b.
they imported new types of crops from europe.

c.
they irrigated dry land to expand their farmlands.

d.
they used oxen-drawn plows and seed funnels to plant crops more quickly and easily.

e.
they relied solely on slave labor to increase food production.

C.

They irrigated dry land to expand their farmlands.

D.

They used oxen-drawn plows and seed funnels to plant crops more quickly and easily.

Explanation:

Sumerians developed irrigation techniques to benefit from the Tigris and Euphrates floods. Through canals, they would flood the fields even after the flood season, and then drain the water. They would also use oxen to trample the ground and kill weeds. After that, they would work intensely on the field before planting the seeds.

answer; /// i believe the correct answer is general act charters;