Prior the development of interchangeable parts, A: the french led the world in the Industrial Revolution.

B: parts used to manufacture goods were custom made.

C: most parts were made in American factories in the South.

D: harvesting and other agricultural work was all done by hand.

help plz. :)

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !