The spring jenny reduced the number of workers necessary to: a. remove cotton seeds from fibers. b. pump water from a mine. c. plant seeds in a field. d. make threat for cloth.

Match the events to the impact they had on africa during the late 19th century 1.colonization of the congo 2.berlin conference of 1884 3.berlin act of 1885 settled tutorial disputes between european nations prohibited the slave trade in africa marks the beginning of scramble for africa

About how many european immigrants were processed at the facilities on ellis island

What from the columbian exchange had perhaps the biggest impact on the world?