San Marino, the oldest country in the world San Marino is considered to be the oldest country in the world, acccording to article published by BBC. The report also states that San Marino has existed as a sovereign nation for many years. It is located in Europe, in the Apennine Mountains, and is surrounded by Italy. San Marino has founded in the year 301 AD by Saint Marinus. It was established as a Christian community, and it managed to remain independent and sovereign throughout the centuries despite several invasions and attacks...