With which country does India share the longest border?

Option 3 : Bangladesh

The correct answer is Bangladesh.

• Bangladesh 
• It shares the longest border with India.
• Bangladesh shares a 4,096-kilometre-long (2,545 mi) international border with India.
• Bangladesh–India border is the fifth-longest land border in the world.
• Five Indian states that share their border with Bangladesh:
  1. Assam.
  2. Tripura.
  3. Mizoram.
  4. Meghalaya.
  5. West Bengal.

• Lengths of boundaries shared with India's neighbouring countries:

• Name of the country	Length of the border (in Km)
  Bangladesh	4,096.7
  China	3,488
  Pakistan	3,323
  Nepal	1,751
  Myanmar	1,643
  Bhutan	699
  Afghanistan	106
  Total	15,106.7

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