Alaska and Hawaii both do not have borders other than their Coastlines.
Tennessee borders eight other states.
Washington borders only 2 other states
Tennessee and Missouri.
Florida - Borders Georgia and AlabamaSouth Carolina - Borders North Carolina and GeorgiaRhode Island - Borders Massachusetts and ConnecticutWashington - Borders Oregon and Idaho
Tennessee and Missouri they border eight other states
Two landlocked states in the U.S. with the fewest state borders are Wyoming and West Virginia, each sharing borders with only 5 other states.
The US shares borders with two other states (countries) - Canada and Mexico
Canada has only two land borders with the US. One with the contiguous states and the other with Alaska. These are therefore the two shortest and longest borders.
Two Complete Water Borders
Which two states have four straight lines as borders
Missouri has to be one of them and Tennessee is the other.
Florida, and there are probably more.