Which best explains why the number of hours to produce 100 bushels of wheat dropped from 373 to 233 between the years 1800 and 1840?

a. better machinery

b. larger farms

c. more farmers

Which of the following best describes the state of the us economy at the end of world war ii? a it was starting to come out of the great depression. b it was out of the great depression and doing better. c it was one of the most powerful economies in the world. d it was entering another recession.

Averb diagram that shows the similarities and differences of two african kingdoms

The 15th amendment to the u.s. constitution, ratified in 1870, deals with what issue? a. prohibition of alcohol b. voting c. declaring war d. free speech