History
Prior to 1952, the butterfly was not defined as a separate stroke from the breaststroke, and so medley races featured only three styles: backstroke, breaststroke, and freestyle. The usual distance of both the IM and the medley relay was thus 300 metres or yards rather than 400. In the United States, some 1953 medley races included the butterfly, and the Amateur Athletic Union made it mandatory from 1954.
Read more about this topic: Medley Swimming
Famous quotes containing the word history:
“The history of all previous societies has been the history of class struggles.”
—Karl Marx (1818–1883)
“Classes struggle, some classes triumph, others are eliminated. Such is history; such is the history of civilization for thousands of years.”
—Mao Zedong (1893–1976)
“Racism is an ism to which everyone in the world today is exposed; for or against, we must take sides. And the history of the future will differ according to the decision which we make.”
—Ruth Benedict (1887–1948)