Givatayim and Kiryat Gat. According to government data as of 2014, there were 227,900 Jews of Iraqi descent in Israel, with other estimates as high as 600,000 Israelis having some Iraqi ancestry. Smaller communities upholding Iraqi Jewish traditions in the Jewish diaspora exist in the United Kingdom, Ireland, Australia, Singapore, Canada, and the United States. The term "Babylonia" What Jewish sources called "Babylon" and "Babylonia" may refer to the ancient city of Babylon and the Neo-Babylonian Empire; or, very often, it means the specific area of Mesopotamia (the region between the Tigris and the Euphrates rivers) where a number of Jewish religious academies functioned during the Geonic period (6th–11th century CE). Early Biblical history In the Bible, Babylon and the country of Babylonia are not always clearly distinguished, in most cases the same word being used for both. In some passages the land of Babylonia is called Shinar, while in the post-exilic literature it is called Chaldea. In the Book of Genesis, Babylonia is described as the land in which Babel, Erech, Accad, and Calneh are located – cities that are declared to have formed the beginning of Nimrod's kingdom (). Here, the Tower of Babel was located (); and it was also the seat of Amraphel's dominion (). In the historical books, Babylonia is frequently referred to (there are no fewer than thirty-one allusions in the Books of Kings), though the lack of a clear distinction between the city and the country is sometimes puzzling. Allusions to it are confined to the points of contact between the Israelites and the various Babylonian kings, especially Merodach-baladan (Berodach-baladan of ; compare ) and Nebuchadnezzar. In Books of Chronicles, Ezra, and Nehemiah the interest is transferred to Cyrus (see, for example, ), though the retrospect still deals with the conquests of Nebuchadnezzar, and Artaxerxes is mentioned once (). In the poetical literature of Israel, Babylonia plays an insignificant part (see , and especially Psalm 137), but it fills a very large place in the Prophets. The Book of Isaiah resounds with the "burden of Babylon" (), though at that time it still seemed a "far country" (). In the number and importance of its references to Babylonian life and history, the Book of Jeremiah stands preeminent in the Hebrew literature. With numerous important allusions to events in the reign of Nebuchadnezzar, Jeremiah has become a valuable source in reconstructing Babylonian history within