WrestleMania is the premier annual event of the largest professional wrestling promotion in the United States, WWE. Formed as a counter to Jim Crockett Promotions' successful Starrcade event, WrestleMania I was broadcast to one million nationwide via closed-circuit television and pay-per-view. WrestleMania's widespread success helped transform the sport of professional wrestling and made WWE the most successful wrestling promotion in the world, prompting WWE to promote the event as the "Super Bowl of sports entertainment".