Q:Information: - Islam (' ;) is a religion articulated by the Quran, a text considered by its adherents to be the verbatim word of God ('), and, for the vast majority of adherents, the teachings and normative example (called the "sunnah", composed of accounts called "hadith") of Muhammad (5708 June 632 CE). It is the world's second-largest religion and the fastest-growing major religion in the world, with over 1.7 billion followers or 23% of the global population, known as Muslims. Islam is an Abrahamic monotheistic religion that upholds that God is one and incomparable and that the purpose of existence is to worship God. Muslims consider Muhammad to be the last prophet of God. - The Arabian Peninsula, simplified Arabia ("", " Arabian island ") is a peninsula of Western Asia situated northeast of Africa on the Arabian plate. From a geological perspective, it is considered a subcontinent of Asia. - Africa is the world's second-largest and second-most-populous continent. At about 30.3 million km (11.7 million squaremiles) including adjacent islands, it covers 6% of Earth's total surface area and 20.4 % of its total land area. With 1.1 billion people as of 2013, it accounts for about 15% of the world's human population. The continent is surrounded by the Mediterranean Sea to the north, both the Suez Canal and the Red Sea along the Sinai Peninsula to the northeast, the Indian Ocean to the southeast, and the Atlantic Ocean to the west. The continent includes Madagascar and various archipelagos. It contains 54 fully recognized sovereign states (countries), nine territories and two "de facto" independent states with limited or no recognition. - A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as stream, creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. - Medina (', "the radiant city"; or , ', "the city"), also transliterated as Madnah, is a city in the Hejaz region of Saudi Arabia that is also the capital of the Al Madinah Region. The city contains al-Masjid an-Nabawi ("the Prophet's Mosque"), which is the burial place of the Islamic prophet Muhammad, and is the second-holiest city in Islam after Mecca. - Al-Masjid an-Nabaw (Prophet's Mosque) is a mosque established and originally built by the Islamic prophet Muhammad, situated in the city of Medina in Saudi Arabia. Al-Masjid an-Nabawi was the third mosque built in the history of Islam and is now one of the largest mosques in the world. It is the second-holiest site in Islam, after Masjid al-Haram in Mecca. It is always open, regardless of date or time. - Mecca or Makkah ("" ) is a city in the Hejaz region of Saudi Arabia that is also capital of the Makkah Region. The city is located inland from Jeddah in a narrow valley at a height of above sea level. Its resident population in 2012 was roughly 2 million, although visitors more than triple this number every year during the "hajj" ("pilgrimage") period held in the twelfth Muslim lunar month of "Dhu al-Hijjah". - Wadi Al - Rummah or ar - Rummah ( ar : ) is one of the Arabian Peninsula 's longest river valleys , at a length of almost 600 km ( 370 mi ) . Now mostly dry and partly blocked by encroaching sand dunes , the wadi arises near Medina at Al - Abyad Mountain ( The White Mountain ) . It heads towards the north - east , connecting to several smaller wadis , like Mohallani Wadi and Murghala Wadi to the north and Jifn Wadi and Jarir Wadi to the south . It ends at Thuayrat Dunes of the ad - Dahna Desert in Al - Qassim Province . The wadi then sinks beneath the sand dunes , where it is called Mistewy Wadi . It emerges on the other side of the desert as Wadi Al - Batin ( approx. 425 km ) , which continues towards the north - east and forms the western boundary of Kuwait . It empties finally into the Persian Gulf . The valley is wide , for it was once a major river valley . According to Dr. Abdullah Al - Musnad from the University of Qassim , about 10,000 years ago it was a river flowing from Medina to the Persian Gulf , with a total length of 1200 km. Periods of drought and the movement of sand at Althwairat and Dahna led to the course of the valley being cut into three parts : Wadi Al - Rummah ( the longest , at 600 km ) , Wadi Aloddi ( 45 km ) , and Wadi Al - Batin ( 450 km ) . Geological studies show that Wadi Al - Rummah flows at full capacity about three times every 100 years . It flowed most recently in 1945 , 1982 , 1987 , 2004 and 2008 . In 1818 , the river valley was flooded for 40 days , in 1838 for 22 days , in 1987 and 2008 for 17 days . In 1838 the wadi overflowed , creating a 200 - square - mile ( 520 km2 ) lake that persisted for two years and attracted water birds rarely seen in the valley . - Najd or Nejd ("Najd") is the geographical central region of Saudi Arabia in which twenty-eight percent of Saudis live. Najd consists of the regions of Riyadh, al-Qassim, and Ha'il. - The Hejaz, also Al-Hijaz ("", literally "the Barrier"), is a region in the west of present-day Saudi Arabia. The region is so called as it separates the land of the Najd in the east from the land of Tihamah in the west. It is also known as the "Western Province." It is bordered on the west by the Red Sea, on the north by Jordan, on the east by the Najd, and on the south by Asir. Its main city is Jeddah, but it is probably better known for the Islamic holy cities of Mecca and Medina. As the site of Islam's holiest places, the Hejaz has significance in the Arab and Islamic historical and political landscape. - Muhammad (c.570 CE 8 June 632 CE) is the central figure of Islam and widely regarded as its founder by non-Muslims. He is known as the "Holy Prophet" to Muslims, almost all of whom consider him to be the last prophet sent by God to mankind to restore Islam, believed by Muslims to be the unaltered original monotheistic faith of Adam, Abraham, Moses, Jesus, and other prophets. Muhammad united Arabia into a single Muslim polity and ensured that his teachings, practices, and the Quran, formed the basis of Islamic religious belief. - A valley is a low area between hills, often with a river running through it. - Western Asia, West Asia, Southwestern Asia or Southwest Asia is the westernmost subregion of Asia. The concept is in limited use, as it significantly overlaps with the Middle East (or Near East), the main difference being the exclusion of Egypt (which would be counted as part of North Africa). The term is sometimes used for the purposes of grouping countries in statistics. - The Madinah Region ("Al-Madnah al-Munawarah") is a region of Saudi Arabia, located on the country's west side, along the Red Sea coast. It has an area of 151,990km and a population of 1,777,973 (2010 Census), subdivided into seven governorates ("muafaat"): - Saudi Arabia, officially known as the Kingdom of Saudi Arabia (KSA), is an Arab sovereign state in Western Asia constituting the bulk of the Arabian Peninsula. With a land area of approximately , Saudi Arabia is geographically the fifth-largest state in Asia and second-largest state in the Arab world after Algeria. Saudi Arabia is bordered by Jordan and Iraq to the north, Kuwait to the northeast, Qatar, Bahrain, and the United Arab Emirates to the east, Oman to the southeast, and Yemen to the south. It is separated from Israel and Egypt by the Gulf of Aqaba. It is the only nation with both a Red Sea coast and a Persian Gulf coast, and most of its terrain consists of arid desert or barren landforms. - The ad-Dahna Desert is the central division of the Arabian Desert. It is a corridor of sandy terrain forming a bow-like shape that connects an-Nafud desert in the north to Rub' al-Khali desert in the south. Its length is more than 1,000km siding Twaik Mountains from the east and does not exceed 80km in width. It is also considered the geographical margin separating Al-Ahsa Province from Najd. Al-Dahna Desert is therefore the string that connects the great deserts of Saudi Arabia. After reading the paragraphs above, choose the best answer for the entity that related to 'wadi al-rummah' with the relationship of 'country'. Choices: - al madinah region - algeria - arabia - england - iraq - israel - jordan - kuwait - madagascar - middle east - qatar - saudi arabia - scotland - united arab emirates - united states - world
A:
saudi arabia