Siena was an Etruscan settlement and a small Roman town. By the 5th century it became the seat of a bishop, but only from the 12th century, when a self-governing commune replaced the earlier aristocratic government, it began to be a city of interest. The consuls who governed the republic, began include slowly but surely more and more the people of the poblani, and the commune increased its territory as the surrounding nobles in their fortified castles submitted to the city’s power.
The Republic of Siena was struggling between the nobility and the people, usually worked in political opposition to a big rival, Florence, in the 13th century it was Ghibelline. In opposition to the wells position of Florence, which is the background of the Divine Comedy of Dante.