So, once again, just some random facts:
1) The Seven Sisters:
Is an informal way of referring to Ivy League Colleges whaic are: Barnard, Byrn Mawr, Mount Holyoke, Radcliffe, Smith, Vassar, and Wellesley.
2) The Mason-Dixon Line:
The Mason-Dixon line is the southernmost boundary that divided Pennsylvania from Maryland. The line was set at c.39 degrees 42' 26" north by the two British surveyors Charles Mason and Jeremiah Dixon who marked out the land between 1773-1777. Before the Civil War, the line represented the division between the Southern pro-slavery and the Northern free states. In common usage nowadays it represents the informal division betwen the North and the South. The Line is one of the possible etymological sources for the terms 'Dixie' and 'Dixieland'.
3) Zip Code:
The term 'ZIP' is an acronym for the Zone Improvement Plan.