The Middle East or Mideast is a region that encompasses Western Asia and all of or part of Northern Africa.The history of the Middle East dates back to ancient times, and throughout its history, the Middle East has been a major centre of world affairs. When discussing ancient history, however, the term Near East is more commonly used. The Middle East is also the historical origin of major religions such as Judaism, Christianity, and Islam. The Middle East generally has an arid and hot climate, with several major rivers providing for irrigation to support agriculture in limited areas. Many countries located around the Persian Gulf have large quantities of crude oil. In modern times the Middle East remains a strategically, economically, politically, culturally and religiously sensitive region