inventor of a reaper that made it easier to harvest crops

war that caused America to develop many of its own industrial centers

hand-powered machine that could spin cotton into thread

name for the system that brought workers and machines into one building to make the production of goods more efficient

word that describes the growth of cities

person who invented the cotton gin, was one of the first to use interchangeable parts

railroad that connected the United States and opened the West to settlers

inventor of the telegraph and a communication code

canal that connected the Great Lakes to the Hudson River