Serbia.
India has the longest border with the Arabian Sea.
Brazil shares its longest border with Bolivia.
Africa has the longest land border of any continent. It is surrounded by the Atlantic Ocean to the west, the Indian Ocean to the southeast, and the Mediterranean Sea to the north.
Warsaw is not a country, it is the capital of Poland , a country that does not boarder the Mediterranean Sea
Pakistan has the longest border with Afghanistan. It stretches for over 1500km.
Vienna is not a country, it is the capital of Austria, a country in Europe that does not border any sea. It might pay you to look at a map and see which European countries do border the Mediterranean Sea - you will find that most European countries don't border the Mediterranean Sea. If you look wider, you will find that most countries in the world do not border the Mediterranean.
Chile has the longest border with the pacific ocean.
Afghanistan shares the longest border with Pakistan at 2,600 Kms.
Pakistan shares the longest border with Afghanistan. It stretches on for over 1500km.
No. Berlin is not a country.
Russia