Southpaw is a boxing term that designates the stance where the boxer has his right hand and right foot forward, leading with right jabs, and following with a left cross right hook. Southpaw is the normal stance for a left-handed boxer.
Because the American system of measurement is very similar to the British imperial system, units are also commonly referred to as imperial units. The units have many different origins.
American weight and measures are based on units used in Britain prior to 1824, when imperial system was officially established. The US law of 1866 set a relationship with the metric system by defining the meter as equal to 39.37 in.