Sports betting can also extend to non-athletic events, such as reality show contests and political elections, and non-human contests such as horse racing, greyhound racing, and illegal, underground dog fighting. Click here to visit สล็อต pg for more exploration, It is generally believed that sports betting in some form or another have been seen in almost every society in history. With the advent of commercialized television coverage of sporting events in the 1950s came an explosion in interest in betting on these events. The growth of online bookmakers in the late 1990s brought about a new wave of internet sports betting.