Palestine is a geographic region in Western Asia between the Mediterranean Sea and the Jordan River. The region is also known as the Land of Israel, the Holy Land or Promised Land. Situated at a strategic location between Egypt, Syria and Arabia, and the birthplace of Judaism and Christianity, the region has a long and tumultuous history as a crossroads for religion, culture, commerce, and politics. The region has been controlled by numerous peoples, including Ancient Egyptians, Canaanites, Israelites, Assyrians,Babylonians, Persians, Ancient Greeks, Romans, Byzantines, the Sunni Arab Caliphates, the Shia Fatimid Caliphate,Crusaders, Ayyubids, Mameluks, Ottomans, the British and modern Israelis and Palestinians. The boundaries of the region have changed throughout history. The modern definition of the region was fixed in the North and East by the 1920-23 Paulet–Newcombe Agreement and British Mandate for Palestine, and on the South by the 1906 Turco-Egyptian boundary agreement. Today, the region comprises the State of Israel and Palestinian territories in which the State of Palestine was declared.