Boxing is a combat sport where two opponents throw punches at each other in a ring, typically wearing gloves, but the term now also covers related striking arts like kickboxing and Muay Thai. Its origins stretch back to prehistoric Ethiopia (6th millennium BC), from where it spread to Egypt, Greece, and Rome, with the earliest visual evidence found in Sumerian carvings from the 3rd millennium BC. The sport was added to the Ancient Olympic Games in 688 BC, and it evolved into its modern form in 19th-century Britain with the introduction of the Marquess of Queensberry Rules in 1867. Matches are structured into 1-3 minute rounds, with winners determined by knockout, disqualification, or judges' scorecards if the fight goes the distance. Amateur boxing is a staple of the Olympics and Commonwealth Games, while professional titles are governed by major bodies like the WBA, WBC, IBF, and WBO.