1) The name "Bluetooth" comes from the 10th-century Danish king, Harald Bluetooth, who united Denmark and Norway.

2) The FIFA Women's World Cup has been held since 1991 and showcases the best women's national soccer teams from around the globe.

3) The world's first credit card was introduced in 1950 by Diners Club.

4) The first graphical web browser, Mosaic, was released in 1993 and played a key role in popularizing the World Wide Web.