Question 1: What information did he invent? Whitney. Eli is an American inventor. Born in Westboro, Massachusetts on December 8, 1765; died in New Haven, Connecticut on January 8, 1825. Whitney is a typical example of Americans' ingenuity in designing and manufacturing small products. He looked exactly like the Yankee created by Mark Yewin a century later in the novel "The Connecticut Man in Arthur's Reign." Whitney was good at building and repairing mechanical devices, and his skills earned him some money that helped him put himself through Yale University. After graduating in 1792, Whitney traveled to Savannah, Georgia, as a teacher and with the desire to study law. There he met Mrs. Nathaniel Green, the widow of a Revolutionary general. While he was studying law, he lived at Lady Green, where he was introduced to some gentlemen concerned with the cotton industry. To the South, cotton was a source of wealth, but it was difficult to separate the fibers and seeds. But Whitney thought it would be a piece of cake to build a device with metal hooks to do the job. In April 1793, he invented the cotton gin, in which metal hook teeth pass through the strips and entangle them in cotton fibers, and finally separate the cotton fibers. One cotton gin can ginning fifty pounds of cotton per day. Such a cotton gin caused such serious and even catastrophic consequences that are rare. The slave system was on the decline in the United States, even in the South, because the slave system was economically inferior to the combination of free labor and machines. But the cotton gin made cotton cultivation a big business, and slavery seemed to be the perfect fit for cotton plantations. As a result, slavery was resurrected, developed and strengthened, and the enemy preferred to engage in war rather than give up its "unique system" peacefully. Without the cotton gin, the American Civil War might not have broken out. When the South Carolina Legislature awarded Whitney a $50,000 bonus, Whitney returned to New England to build cotton gins. However, the cotton gin was so easy to manufacture and its principles so easy to understand that Huixingni spent all his bonuses and profits in order to protect his patent rights, resulting in nothing financially. Whitney was one of the first members of the Memorial Hall of American Greats, established in 1900.