| By: Andrew Nicol |
| In 1891, Dr. James Naismith invented the game of basketball. | |
| The origination of basketball happened in a YMCA in Massachusetts. | |
| 46 Years later the NBL(National Basketball League) was formed and then the Basketball Association of America. |
| In 1949 the two leagues merged and became the NBA(National Basketball Association). | |
| Eventually the 17 team league decreased to 8 teams and then grew to 29 teams that are currently in the NBA. | |
| The density of the teams has increased dramatically since the start of the NBA |
| The Growth of the NBA http://www.infoplease.com/ipsa/A0003877.html | |
| Expansion/Merger Timetable http://www.infoplease.com/ipsa/A0003878.html | |
| History and development of basketball http://www.sportsrules.50g.com/basketball/history-basketball.htm |