Dayton, Ohio,,,,,,,,,,,,,and hydraulic engineering............oh isn't that interesting.........and Wright Patterson air force base right next to it.................oh boy.......


Historically, Dayton has been the home for many patents and inventions since the 1870s.^[14][24] According to the National Park Service, citing information from the U.S. Patent Office, Dayton had granted more patents per capita than any other U.S. city in 1890 and ranked fifth in the nation as early as 1870.^[25][26] The Wright brothers, inventors of the world's first airplane, and Charles F. Kettering, world-renowned for his numerous inventions, hailed from Dayton.^[27] The city was also home to James Ritty's "Incorruptible Cashier", the first mechanical cash register, and Arthur E. Morgan's "hydraulic jump", a flood prevention mechanism that helped pioneer modern-day hydraulic engineering.^[28][29] Paul Laurence Dunbar – a famous African-American poet and novelist – penned his most famous works in the late 19th century and became an integral part of the city's history.^[30]