// todo need optimize like in event.jsp. Add indexing or not indexing this page. Middle Class (1 ene 1200 año – 1 ene 2020 año) (Cinta de tiempo)

Middle Class (1 ene 1200 año – 1 ene 2020 año)

Descripción:

The middle class is a class of people in the middle of a social hierarchy. The social group between the upper and working classes, including professional and business workers and their families. The middle class was created by guilds, specifically artisan guilds.