Complex sentence: The Volga port of Samara appears on Italian maps of the 14th century, but officially the town started with a fortress built in 1586 at the confluence of the Volga and Samara Rivers.
Split into simpler sentences: The Volga port of Samara appears on Italian maps of the 14th century. Officially the town started with a fortress 1586 at the confluence of the Volga and Samara Rivers.