Bulgaria, situated in Southeast Europe on the Balkan Peninsula, boasts a rich and diverse history dating back to ancient times. The region was first inhabited by Thracian tribes before coming under the influence of the Roman and Byzantine Empires. In 681 AD, the First Bulgarian Empire was founded, establishing Bulgaria as one of the oldest states in Europe. Over the centuries, Bulgaria has experienced periods of independence, cultural flourishing, and foreign domination, including nearly five centuries under Ottoman rule. Following liberation in 1878, Bulgaria underwent significant political and social transformations, becoming a kingdom, then a socialist republic after World War II, and ultimately a democratic nation after the fall of communism in 1989. Today, Bulgaria is a member of the European Union and NATO, celebrated for its cultural heritage, Orthodox Christian traditions, and breathtaking landscapes, from the Danube River to the Black Sea coast.