Which two countries have the longest border in the world
- Which two countries share the longest border in the world
- Which two countries share the longest international border in the world
- Which two countries have the longest land border in the world
- Which two countries share the longest land border in the world
- Which two countries share the longest undefended border in the world
- Which two countries share the longest national border in the world
- Which two countries border is the longest in the world
- Which two countries share the longest international land border in the world
- Between which two countries can you find the longest border in the world