the country's second-largest ethnic group with 1,631,600 people. The great majority of Israeli Arabs are settled-Muslims, with smaller but significant numbers of semi-settled Negev Bedouins and Arab Christians. Other minorities include various ethnic and ethno-religious denominations such as Druze, Circassians, Black Hebrew Israelites, Samaritans, Maronites and others.
Israel is a representative democracy with a parliamentary system, proportional representation and universal suffrage. The Prime Minister serves as head of government and the Knesset serves as Israel's unicameral legislative body. Israel has one of the highest life expectancies in the world. It is a developed country, an OECD member, and its economy, based on the nominal gross domestic product, was the 40th-largest in the world in 2011. Israel has the highest standard of living in the Middle East