When was the yo-yo invented?

Toys that were like yo-yos had been around for hundreds of years, but a man named Pedro Flores was responsible for manufacturing the first modern yo-yo in 1928. Originally from the Phillipines, Mr. Flores based his design on a game that he remembered as a child. By 1929 his American factory was churning out 300,000 yo-yos a day! So while he never claimed to be its inventor, Pedro Flores was certainly its biggest popularizer.