A little exlanation is needed here, indeed, because of the words "bring back democracy." In the late 18th century, there were no democratic governments in the world. There were monarchies, autocracies, empires. So, the American republic was a pioneering experiment. In very broad terms , it is a restoration of democracy if you go back to ancient Greece, where one limited democracy existed in Athens and other city-states. But it is right , for many freedom fighters around the world, the American Revolution was an inspiration and a model to follow.
The main reason why this was the case during the Renaissance was because art collection was a luxury, in that it required a lot of money. This made it advantageous for only the rich people to support it fully.
IN this quote Benjamin Franklin is referencing the failed "Albany Plan," since this was his idea, in which the colonies would have formed a loose union in order to better manage taxes.