Which Islamic country celebrated its 50th independence on 2 December 2021?

Which Islamic country celebrated its 50th independence on 2 December 2021?

Explanation
  • UAE National Day is celebrated on 2 December each year in the United Arab Emirates.
  • The UAE National Day falls on the anniversary of the federal unification of the six emirates (seven in 1972 after Ras Al Khaimah joined) in 1971.