Alaska
Alaska
Its northern border is closer to the north pole than the northern border of any other state.
This probably refers to Alaska, as it is connected to Canada not the connected 48 states. Hawaii doesn't border other states but isn't connected to North America.
Hawaii.
Hawai'i
The state of Hawaii has no common border with any other state or country, as it is located in the middle of the Pacific Ocean.
Columbus is entirely within Ohio. It does not border any other state.
Alaska and Hawaii do not border any other state.
Hawaii
Hawaii.
Hawaii is the only state out of the 50 US states that does not share a border with any other state.