The so-called Knickerbocker Rules were the 20 general guidelines to the rules of the game of baseball and of the organization itself that drew up those rules: The early 1840s New York ball club called the Knickerbockers. Baseball is a team sport, in which a fist-sized ball is thrown by a defensive player called a pitcher, and an offensive player called a batter attempts to hit it with a tapered, cylindrical, smooth stick called a bat. ... Events and Trends Technology First use of anaesthesia in an operation, by Crawford Long War, peace and politics First signing of the Treaty of Waitangi (Te Tiriti o Waitangi) on February 6, 1840 at Waitangi New Zealand. ... Midtown Manhattan, looking north from the Empire State Building, 2005 New York City (officially named the City of New York) is the most populous city in the United States, the most densely populated major city in North America, and is at the center of international finance, politics, entertainment, and culture. ... Knickers is a word used to refer to two very different items of clothing. ...

Many of those rules were derived from earlier sources, but their compilation by the Knickerbocker club provided a basis for modern adult organized baseball, in contrast to the various schoolyard ball games that had been around for generations previous.