Political Geography and Boundaries

Russia has the longest land border in the world, stretching over 20,000 kilometers.

The 49th Parallel is the boundary between the United States and Canada, stretching from the Atlantic Ocean to the Pacific Ocean.

Russia has the most land borders, sharing borders with 14 countries.

The Demilitarized Zone is the boundary between North Korea and South Korea, a 4-kilometer wide strip of land that was created after the Korean War.

The Rio Grande is the boundary between the United States and Mexico, stretching from the Gulf of Mexico to the Pacific Ocean.

The Indus River is the boundary between India and Pakistan, stretching from the Himalayas to the Arabian Sea.

The Rhine River is the boundary between France and Germany, stretching from the Swiss Alps to the North Sea.

The Douro River is the boundary between Spain and Portugal, stretching from the Spanish-Portuguese border to the Atlantic Ocean.

The Alps are the boundary between Italy and Switzerland, stretching from the Mediterranean Sea to the Adriatic Sea.