Jordan, officially the Hashemite Kingdom of Jordan, is a country in Eurasia. It borders Saudi Arabia to the southeast, Iraq to the east, Syria to the north, Palestine and Israel to the west, sharing control of the Dead Sea. Jordan's only port is at its southern tip, at the Red Sea's Gulf of Aqaba, which it shares with Israel, Egypt, and Saudi Arabia. Much of Jordan is covered by the Arabian Desert. However, the north-western part of Jordan is part of the Ancient Fertile Crescent. The capital city is Amman. During its history, Jordan has seen numerous civilizations, including such ancient eastern ones as the Canaanite and later other Semitic peoples such as the Edomites, and the Moabites. Other civilizations possessing political sovereignty and influence in Jordan were: Akkadian, Assyrian, Judean, Babylonian, and Persian empires. Jordan was for a time part of Pharaonic Egypt, the Hasmonean Dynasty of the Maccabees, and also spawned the native Nabatean civilization which left rich archaeological remains at Petra, one of the New Seven Wonders of the World located in the Ma'an Governorate. Cultures from the west also left their mark, such as the Macedonian, Roman, Byzantine, and Ottoman Turkish empires. Since the seventh century the area has been under Muslim and Arab cultures, with the exception of a brief period when the west of the area formed part of the Crusader Kingdom of Jerusalem and a short time under British rule. The Hashemite Kingdom of Jordan is a constitutional monarchy with representative government. The reigning monarch is the chief executive and the commander-in-chief of the armed forces. The king exercises his executive authority through the prime ministers and the Council of Ministers, or cabinet. The cabinet, meanwhile, is responsible before the democratically elected House of Deputies which, along with the House of Notables (Senate), constitutes the legislative branch of the government. The judicial branch is an independent branch of the government.