India shares the longest border with Bangladesh with 4096 Kilometers
Afghanistan shares the longest border with Pakistan at 2,600 Kms.
Sweden shares its longest border with Norway, which is located to the West of the country. This border is 2542 miles long. Its Eastern border is shared with Finland and is much shorter, about 1/3 that length.
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Bangladesh shares the largest border with India; their shared border is 4,053 kilometers long. At 1,463 kilometers long, Burma has the second-longest shared border with India.
India shares the longest border with Bangladesh with 4096 Kilometers
Afghanistan shares the longest border with Pakistan at 2,600 Kms.
Brazil shares its longest border with Bolivia.
France
Afghanistan does.
Pakistan shares the longest border with Afghanistan. It stretches on for over 1500km.
Bangladesh
CanadaCanada shares the longest border with the US.
Alaska
India shares the longest border with Pakistan on its eastern side. The total length of the border between India and Pakistan is 2,900 kilometers.
Nicaragua shares a boundary with both Costa Rica and Honduras.
The USA is the only country which shares a land border with Canada. ================================================= Canada also shares a land border with Denmark. The international boundary runs through Hans Island, which is between Ellesmere Island and Greenland.