500 BC Yo-yos were invented. The first yo-yos were made of wood, metal, and clay.
1500s AD Pictures of yo-yos were found in Egyptian temples.
Hunters used yo-yos to hunt. They tied a rock to the end of a string and then threw the rocks at animals.
1789 Wealthy French people had yo-yos made of ivory and glass.
1790s Yo-yos were used as stress relievers on immigrant ships.
1866 Yo-yos were first brought to the United States.
1920s Yo-yos were made of wood with string tied around the axle.
1928 Donald Duncan bought a yo-yo company from Pedro Flores.
1946 Duncans company had lots of luck in Wisconsin where they had to make 36,000 yo-yos and hour to keep up with the country-wide demand for yo-yos.
1965 Duncans company goes bankrupt.
1974 Richard Nixon yo-yos at the opening of The Grand Ole Opry in Nashville.
1985 A yo-yo is taken into space, but the astronauts could not make the yo-yo "sleep" due to weightlessness.
1986 The Yomega Corporation comes out with a "yo-yo with a brain." This yo-yo has a clutch return.
1992 The yo-yo goes back into space where astronauts make a slow-motion yo-yo video.
1999 Yo-yos are everywhere! You cant go anywhere without seeing someone yo-yoing.