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Q: World's longest land border is between two countries?
  • A. Australia and New Zealand
  • B. India and China
  • C. Switzerland and Italy
  • D. Canada and USA
Correct Answer: Option D - The longest land border of world lies between the USA and Canada. Actually it’s the "49th parallel line" from Rocky Mountains to the Strait of Georgia, which acts as the border between Canada & USA. The border length is 8893 km.
D. The longest land border of world lies between the USA and Canada. Actually it’s the "49th parallel line" from Rocky Mountains to the Strait of Georgia, which acts as the border between Canada & USA. The border length is 8893 km.

Explanations:

The longest land border of world lies between the USA and Canada. Actually it’s the "49th parallel line" from Rocky Mountains to the Strait of Georgia, which acts as the border between Canada & USA. The border length is 8893 km.