Islam is a monotheistic faith centered around belief in the one God (Allah). In this regard, it shares some beliefs with Judaism and Christianity by tracing its history back to the patriarch Abraham, and ultimately to the first prophet, Adam. All the prophets preached the same universal message of belief in one God and kindness to humanity. The last in the series of prophets, according to Muslims, was Muhammad. Muhammad was born in Mecca, Saudi Arabia around 570 CE. He worked first as a shepherd and then as a merchant. He was not happy with the people around him because of superstitions and social and economic injustice.