He invented interchangeable parts and the Cotton Gin.

He invented the mechanical reaper for harvesting wheat faster.

He was a leading advocate of economic nationalism who proposed the American System.

He was Secretary of State under James Monroe.

He was a popular war hero elected as a Democratic president.

He invented the steel plow in 1837.

He was a British mechanic who memorized the designs of the textile mill in England, then came to the US to create his own.

He developed a device that sent and received pulses of electronic current through a wire.

He was Jackson's campaign manager, from NYC.

He created the factory system and was known for hiring young women to work in his factories.