San Marino, officially the Republic of San Marino and also known as the Most Serene Republic of San Marino as the continuation of the monastic community founded on 3 September 301, by stonecutter Marinus of Arbe. Legend has it that Marinus left Rab, then the Roman colony of Arba, in 257 when the future emperor, Diocletian, issued a decree calling for the reconstruction of the city walls of Rimini, which had been destroyed by Liburnian pirates.
San Marino is governed by the Leges Statutae Republicae Sancti Marini, a series of six books written in Latin in the late 16th century, that dictate the country’s political system, among other matters. The country is considered to have the earliest written governing documents (constitution) still in effect.
The country's economy mainly relies on finance, industry, services and tourism. It is one of the wealthiest countries in the world in terms of GDP (per capita), with a figure comparable to the most developed European regions. San Marino is considered to have a highly stable economy, with one of the lowest unemployment rates in Europe, no national debt and a budget surplus.