"le vivre ensemble" means living together with other groups, communities; it's not simply "live together". In other words, we also use the term cultural diversity which is also stands for respecting and tolerating towards other communities, cultural. There are many separate societies that emerged around the globe differed markedly from each other, and many of these differences persist to this day. As well as the more obvious cultural differences that exist between people, such as language, dress and traditions, there are also significant variations in the way societies organize themselves, in their shared conception of morality, and in the ways they interact with their environment.

I would opt for (or the social existence of People)

https://www.vocabulary.com/dictionary/social intercourse