Like association football, rugby union and rugby league both developed from traditional British football games in the 19th century. Rugby was codified by the Rugby Football Union in 1871. The Rugby Football League developed after a number of leading clubs, that wished to be allowed to compensate their players for missing work, formed their own governing body in 1895 and subsequently the two organisations developed somewhat different rules. For much of the 20th century there was considerable antagonism between rugby league, which was a mainly working class game based in the industrial regions of northern England, and rugby union, which is a predominantly middle class game in England, and is also popular in the other home nations. This antagonism has abated since 1995 when the governing body now known as World Rugby opened rugby union to professional players.