The roots of International Harvester can be traced back to the 1830s, when Cyrus Hall McCormick, an inventor from Virginia, finalized his version of a horse-drawn reaper. The reaper was demonstrated in tests in 1831 and was patented by Cyrus in 1834. Together with his brother, McCormick moved to Chicago in 1847 and started the McCormick Harvesting Machine Company. The McCormick reaper sold well, partially as a result of their savvy and innovative business practices. Their products came onto the market just as the development of railroads offered wide distribution to distant market areas. He developed marketing and sales techniques, developing a vast network of trained salesmen able to demonstrate operation of the machines in the field.