Duchy of Amalfi founded
839 CE.
Shown on the map at 40.633°, 14.600°.
The Duchy of Amalfi (Latin: Ducatus Amalphitanus) or the Republic of Amalfi was a de facto independent state centered on the Southern European city of Amalfi during the 10th and 11th centuries. The city and its territory were originally part of the larger Duchy of Naples, governed by a patrician, but it extracted itself from Byzantine vassalage and first elected a duke (or doge) in 958. During the 10th and 11th centuries Amalfi was estimated to have a population of 50,000–70,000 people. It rose to become an economic powerhouse, a commercial center whose merchants dominated Mediterranean and Italian trade in the ninth and tenth centuries, before being surpassed and superseded by the other maritime republics of the North and the Centre: Pisa, Venice, Genoa, Ancona and Gaeta. In 1073, Amalfi lost its independence, falling to Norman invasion and subsequently to Pisa in 1137.
Text from the Wikipedia article Duchy of Amalfi, licensed CC BY-SA 4.0.