Thus Siena, excluded from maritime commerce by its situation, remained, broadly speaking, faithful to the Ghibelline party; while Perugia at the distance of a few miles, equally debarred from mercantile expansion, maintained the Guelf cause with pertinacity.
The annals of the one city record a long succession of complicated party quarrels, throughout the course of which the State continued free; the Guelf leanings of the other exposed it to the gradual encroachment of the Popes, while its civic independence was imperiled and enfeebled by the contests of a few noble families.

Lucca and Pistoja in like manner are strongly contrasted, the latter persisting in a state of feud and faction which delivered it bound hand and foot to Florence, the former after many vicissitudes attaining internal quiet under the dominion of a narrow oligarchy.
But while recognizing these differences, which manifest themselves partly in what may be described as national characteristics, and partly in constitutional varieties, we may trace one course of historical progression in all except Venice.

This is what natural philosophers might call the morphology of Italian commonwealths.

To begin with, the Italian republics were all municipalities.

That is, like the Greek states, they consisted of a small body of burghers, who alone had the privileges of government, together with a larger population, who, though they paid taxes and shared the commercial and social advantages of the city had no voice in its administration.