During the time around the French revolution, the people had an agreement and strong cause to work together and created the National Assembly. This in turn makes an agreement amongst people to create a document
In the new National assembly the people came together to create the Declaration of the Rights of Man, stating that all men were equal and wouldn't be judged by class.
This was one of the key important parts of french Revolution. People were slowly developing a sense of rebellion which would eventually ignite rebellions across France.