The Republic of San Mario, or the Most Serene Republic of San Marino is a microstate and is one of the smallest countries in the world with a size of just over 24 square miles.

San Marino is officially the oldest sovereign state in the world, and the oldest constitutional republic as well and has the oldest written constitution in history, created in 1600, which is a constitution it still follows to this day.

San Marino is named after a stonemason named Marinus, who came from a Roman colony and founded San Marino as an independent monastic community. It is currently one of the wealthiest countries in the world in relation to GDP per capita and has one of the lowest unemployment rates in the continent, as well as having a budget surplus and no national debt.

More Info: www.oldest.org