The Warsaw Pact.
All were members of the Warshaw Treatise.
All are countries in the Eastern Europe.
Romania and Bulgaria are both part of the EU, which means no visa is required. Free travel is all throughout the EU, meaning no visa is require to travel through any part of the EU if you are a citizen of the EU.
THey all lost,means they were not effective.
All countries in Europe expect USSR, Romania, Poland, Bulgaria, Albania, Hungary, Czechoslovakia and East Germany were NOT communist.
The Black Sea is bordered by Turkey, Bulgaria, Romania, The Ukraine, Russia and Georgia.Of these, Bulgaria, Romania and The Ukraine are considered to be European, while the other three are considered Eurasian, meaning they can be considered to be European and Asian.Romania, Russia, Ukraine, Bulgaria, and part of Turkey.
All the countries that have no monarchs. E.g.: Hungary, Poland, Bulgaria, Romania, Czech Republic, Slovakia, slovenia, Croatia, Austria, Ukraine, Germany, France, the USA, etc.
Ukraine
The Warsaw Pact no longer exists. It was disbanded some years ago. Besides the Soviet Union, the other six nations of the Warsaw Pact were East Germany, Poland, Hungary, Bulgaria, Romania, and Czechoslovakia.The Warsaw Pact was a military alliance between the Soviet Union and its satellite countries in Eastern Europe. It was formed in 1955 as a response to the entry of West Germany into NATO. The pact was dissolved in 1991.The original members were Albania, Bulgaria, Czechoslovakia, Hungary, Poland, Romania, and the Soviet Union. (East Germany joined in 1956. Albania left in 1968.)Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, Romania, and the Soviet Union were all in the Warsaw Pact.
All are European countries.
All these countries are Eastern Orthodox.
Albania,Republic of Kosovo,Macedonia,Montenegro,Serbia,Bosnia&Herzegovina,Kroacia, Grece,Bulgaria,(one part of) Rumania.