Explanation

Bangladesh, Bhutan, India, Pakistan, Nepal, and Sri Lanka are Countries of South Asia

Bangladesh is bordered by the Indian states of West Bengal to the west and north

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Pakistan shares its border with four countries

Pakistan borders India 2100 KM long in the east,

 Afghanistan border is 2,611 KM long in the west (northwest)

Iran border is 909 KM long also in the west

China 599 KM long border situated in the northeast.

  The beach of the Arabian Sea 1058KM forms its southern border.

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 ND1-1-2023