Italy has a population density of about 200 people per square kilometer, with minority groups making up a small percentage. While Roman Catholicism is the dominant religion, all faiths have equal legal protection. Italian originated from Latin and is comprised of numerous dialects spoken in Italy and neighboring regions. Italy was not always a unified state, as it was previously divided into feudal states until the 19th century when movements helped establish the Kingdom of Italy. In the early 20th century, Mussolini rose to power and established a fascist dictatorship. Italy has a rich cultural heritage and traditions that have influenced those who have immigrated to other parts of the world like the United States.