There are many factors for PERSIA in the book Medici Money and any of these could be very influential for revolutionary change at this time. The Medici family is very much involved in economics with their banks. The building of different banks all over the city and even elsewhere was a cause for change, building, and revolution in this book. Although this is very influential, the most influential factor of PERSIA in this book is the politics. Politics was the cause for the most change for the Medici's and for all of the city as well because of their government. The people evolved with each other as a whole and as a community, which is why it is very revolutionary.

The way that these people went about running the government was different and caused a lot of change and revolution. To make sure that one person was not going to become a tyrant, there was a new government made up of eight priors and one gonfaloniere della giustizia (which means standard-bearer of justice) elected every two months. The men who were chosen to be a possibility had their names written on tags of paper, which were then put into leather bags representing different sections of the town. From this point nine names were chosen at random. There were two priors for each of the four quarters of the town which meant six priors from seven of the richer guilds, two priors from fourteen of the artisans guilds, and one other from the richer guilds to be elected the gonfaloniere della giustizia. Although these men were chosen at random, they were selected beforehand based on a certain criteria they had to meet which included family and financial history.

In 1421, Cosimo's father (Giovanni di Bicci) was elected gonfaloniere della giustizia (standard-bearer of justice) of the Florentine government. This was the first time a Medici had the honor since Silvestro sided with a revolt in 1378. This also meant that the Medici family was once again up , third richest in the city.

The city made it so that in order for no single man to rule, everyone will rule ( at least everyone from the wealthy classes) if only for a very brief amount of time. It was a smart and idealistic plan, but it was also not the best if they were going to try and decide long term happenings in the city. It is easy, though, to see how this could help a city to evolve on its own. By having every eligible man in the city running it at some point (for a brief time) it means that everyone is contributing to help make the city grow and develop. At this point in time politics was the most influential and biggest factor for revolutionary change in this city.