This is the population density of US States by Longitude.
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Longitude Joined Antebellum Joined Postantebellum
-75.5 529 -75.499999 -74.871826 1263 -74.871825 -77.194527 290 -77.194526 -72.699997 747 -72.699996 -83.441162 192 -83.441161 -76.641273 637 -76.641272 -71.382439 898 -71.382438 -71.5 157 -71.499999 -75 415 -74.999999 -81.163727 179 -81.163726 -78.024902 221 -78.024901 -80.793457 223 -80.793456 -71.742332 1060 -71.742331 -72.699997 70 -72.699996 -84.27002 115 -84.270019 -86.660156 173 -86.660155 -82.996216 288 -82.996215 -92.329102 106 -92.329101 -86.126976 192 -86.126975 -90 63 -89.999999 -89 226 -88.999999 -86.902298 101 -86.902297 -68.972168 45 -68.972167 -92.60376 90 -92.603759 -92.199997 59 -92.199996 -84.506836 178 -84.506835 -81.760254 422 -81.760253 -100 117 -99.999999 -93.581543 57 -93.581542 -89.5 109 -89.499999 -119.417931 250 -119.41793 -94.63623 72 -94.636229 -120.5 44 -120.499999 -98 36 -97.999999 -80.5 74 -80.499999 -117.224121 29 -117.22412 -100 26 -99.999999 -105.358887 57 -105.358886 -109.533691 7.8 -109.53369 -100.437012 11 -100.437011 -100 12 -99.999999 -120.740135 118 -120.740134 -114.742043 24 -114.742042 -107.290283 6 -107.290282 -111.950684 42 -111.950683 -96.921387 59 -96.921386 -111.093735 65 -111.093734 -106.018066 17 -106.018065 -153.369141 1.3 -153.36914 -155.844437 223 -155.844436
Guess: Max population density of the largest city in each state represented by longitude, with blue signifying that the city was founded before the American Civil War and red after
Guess: Number of American slaves before and after the civil war by longitude
african-american population before and after the american civil war in some cities.
Blue - States Before
Red - States After
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