None. A border defines the boundary of a state therefore no state will cross the border of another state.
california
Alaska and Hawaii do not border any other state.
most likely just another state but especially if it is not called an international border
Alaska and Hawaii
Hawaii is a state in the United States that does not touch or border another state. It is located in the Pacific Ocean and consists of a group of islands.
Hawaii
border ruffians?
The only Australian state that does not share a border with South Australia is Tasmania. All mainland states, as well as the Northern Territory, share a border with South Australia. Tasmania, however, is Australia's island state, and it shares both a sea border and a land border with Victoria alone.
That means you can cross from one to another. The states are next to each other.
Maine
Maine.