Serbia to Czech Republic: Six of the World’s Newest Countries

On July 9, 2011, South Sudan's Republic became the 54th republic in Africa and the youngest country in the world.

Following an independence referendum in June 2006, Montenegro proclaimed its independence from Serbia.

After Yugoslavia split up, Serbia reunited with Montenegro until their amicable split in 2006, at which point Serbia regained its independence.

After World War II, Palau became a UN Trust Territory under US administration, gaining independence in 1994 but maintaining financial ties with the US.

Czechia became a country in 1993 after splitting from Czechoslovakia. It has a prime minister for the government and a president for the nation.

Slovakia gained independence on January 1, 1993, following the peaceful split from Czechoslovakia, often called the Velvet Divorce.