Infoplease - Did You Know? 'Did You Know?' from the Editors of Infoplease http://www.infoplease.com/daily en-us Copyright 2013 Pearson Education editor@infoplease.com webmaster@infoplease.com Sun, 19 May 2013 04:05:00 GMT Infoplease - Did You Know? http://img.infoplease.com/images/04ip_logo113x20.gif 113 20 http://www.infoplease.com/daily Ballet was performed for the first time in 1489. http://www.infoplease.com/ipea/A0153763.html http://www.infoplease.com/ipea/A0153763.html