How did the olympic games become the olympic games?

The Ancient Greeks held the games at Olympus, Greece, thus giving the name 'The Olympic Games'. In 1894, Pierre de Coubertin wanted to continue the Olympics, and named these modern Olympics the...

In about 1877

There are a total of 28 sports for the Youth Olympic Games. Some sports have been modified to suit younger competitors, e.g. basketball is played on a 3-on-3 version.

for summer Olympics http://www.mahalo.com/olympic-sports-list and for winter Olympics http://www.topendsports.com/events/winter/sports/

There was skiing, swiming, football, hockey, and etc.