steel plow - made it easier to clear fields, mechanical reaper - made it easier to harvest wheat , cotton gin - helped remove the seeds from cotton, interchangeable parts - identical machine made parts, Eli Whitney - inventor of the cotton gin and interchangeable parts, steamboat - made it possible to travel upstream; improved transportation, telegraph - made it easier to communicate across long distances, Samuel Morse - inventor of the telegraph, Robert Fulton - inventor of the steamboat, urbanization - the movement of people from the farms to the cities, Free enterprise - economic system where there is little government interference and the availability of goods is determined by supply and demand, Industrial Revolution - a change in how things were made; goods were produced by machines in factories, factory system - idea introduced by Francis Cabbot Lowell; cloth was produced from start to finish in one factory,

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