The United Arab Emirates is a federation of seven states (Abu Dhabi, Ajman, Dubai, Fujeirah, Ras al-Khaimah), Sharjah, and Umm al-Quwain. Prior to 1971, these Emirates were known as the Trucial states or Trucial Oman.
The UAE is a Federal constitutional monarchy, with the Emir of Abu Dhabi being the President and the Emir of Dubai being the vice president as well as Prime minister.
The capital of the UAE is Abu Dhabi and the largest city is Dubai.