Prior to the mid-nineteenth century, farm work in America was often done by hand with little technological advancement. After this time, inventions such as the mechanical reaper, steel plow and cotton gin resulted in the - a. decreased use of slave labor. b. need for labor unions. c. need for agricultural schools. d. increased efficiency of production.​

Choose the clause that would be used to decide each case 1. a religious school wants to receive government funding. 2. a worker who refuses to work on her religion's holy day is fired by her employer. 3. a religious organization does not pay tax on religious items! 4. the coach of a public school's sports team has players say a prayer before they take the field.

What was the most important consequence of the large-scale ecological changes in africa two hundred thousand years ago?

In what way did expansion and global trade during the 15th to 18th centuries affect the economies of european countries?