Developed in the 1990s, this technology enables short-range wireless communication between electronic devices.
Bluetooth
Oops!
Check
Okay!
Check
25
Who invented the telephone?
Alexander Graham Bell
Oops!
Check
Okay!
Check
25
In which decade did television become widely available around the world?
1950s
Oops!
Check
Okay!
Check
25
It was invented in 1817 by Karl von Drais, with pedals added in the 1860s. It also has wheels, a seat and handlebars and it is made of light materials.