The wide variety of peoples inhabiting Georgia has meant a correspondingly rich array of active religions. Today most of the population in Georgia practices Orthodox Christianity, primarily the Georgian Orthodox Church. Of these (83.9%), around 2% follow the Russian Orthodox Church. Around 3.9% of the population follow the Armenian Apostolic Church, almost all of which are ethnic Armenians. According to the CIA factbook, Muslims make up 9.9% of the population,and are mainly found in the Adjara and Kvemo Kartli regions and as a sizeable minority in Tbilisi. Roman Catholics make up around 0.8% of the population and are mainly found in the south of Georgia and a small number in Tbilisi. There is also a sizeable Jewish community in Tbilisi served by two synagogues. The Georgian Apostolic Autocephalous Orthodox Church is one of the world's most ancient Christian Churches, founded in the 1st century by the Apostle Andrew the First Called. In the first half of the 4th century Christianity was adopted as the state religion. This has provided a strong sense of national identity that has helped to preserve a national Georgian identity, despite repeated periods of foreign occupation and attempted assimilation.