US State Adjacency Graph
by philihp
This is pretty cool. From Keenan Pepper, an undirected graph showing each state’s adjacency to other states; excluding Hawaii and Alaska. Probably useful if you ever want to play Risk on a map of the United States.




New York is not connected to Rhode Island
You’re right… it’s questionable:
map
Rhode Island and New York State shares a narrow maritime border between Block Island and Fischers Island (about 2 miles apart). See http://maps.google.com/maps?saddr=block+island&daddr=long+island&ll=41.297542,-71.897793&spn=0.042237,0.086002&gl=us&dirflg=d&geocode=FQNBdAIdubK7-ymRYrr2yfLliTEqy-T08OQLaQ%3BFZZkbgIdkAyk-ynLpe7hVEToiTEYDZSGYfn3HQ&t=h&z=14&vpsrc=6&source=gplus-ogsb