History of Bulgaria Timeline

Over several decades, Ottoman forces under Murad I and Bayezid I conquered the Bulgarian lands, capturing Tarnovo in 1393 and ending the Second Bulgarian Empire by 1396. Bulgaria entered nearly five centuries of Ottoman rule.

Image source: Bulgarian–Ottoman wars

After the fall of the capital Tarnovo in 1393, the last Bulgarian Patriarch Euthymius was exiled and the Bulgarian Patriarchate abolished, symbolizing the end of medieval Bulgarian independence and church autonomy.

Image source: Euthymius of Tarnovo

Catholic Bulgarians in the northwestern town of Chiprovtsi rose against Ottoman authorities in 1688, hoping for Habsburg support. The uprising was brutally suppressed, but it became an early symbol of Bulgarian resistance to foreign rule.

Image source: Chiprovtsi uprising

The monk Paisius of Hilendar completed his history of the Slavic-Bulgarian people in 1762, awakening national consciousness among Bulgarians. The work is considered the founding text of the Bulgarian National Revival.

Image source: Istoriya Slavyanobolgarskaya

A firman of Sultan Abdülaziz created an autonomous Bulgarian Exarchate, separating the Bulgarian church from Greek control in Constantinople. The establishment of the Exarchate was a major victory for the National Revival movement.

Image source: Bulgarian Exarchate

Bulgarian revolutionaries launched a large-scale insurrection in April 1876. Though brutally crushed by Ottoman irregulars, the massacres provoked international outrage, particularly in Britain and Russia, galvanizing support for Bulgarian independence.

Image source: April Uprising of 1876

Russia declared war on the Ottoman Empire in support of the Balkan Slavs. After fierce fighting, including the siege of Plevna, Russian and Bulgarian forces liberated Bulgaria. March 3, the date of the Treaty of San Stefano, is celebrated as Bulgaria's Liberation Day.

Image source: Russo-Turkish War (1877–1878)

The Congress of Berlin revised the Treaty of San Stefano, dividing Bulgaria into a principality north of the Balkan Mountains and an autonomous Ottoman province of Eastern Rumelia. Macedonia was returned to Ottoman control, fueling later Bulgarian irredentism.

Image source: Treaty of Berlin (1878)

The Constituent Assembly in Veliko Tarnovo adopted one of Europe's most liberal constitutions, establishing a constitutional monarchy with a popularly elected parliament. It became the foundation of modern Bulgarian statehood.

Image source: Tarnovo Constitution

A bloodless coup in Plovdiv united the autonomous province of Eastern Rumelia with the Principality of Bulgaria. Despite a subsequent Serbian attack, Bulgaria prevailed in the Serbo-Bulgarian War and the unification was internationally recognized in 1886.

Image source: Bulgarian unification

Taking advantage of the Young Turk Revolution, Prince Ferdinand declared Bulgaria fully independent of the Ottoman Empire and elevated himself to Tsar, completing the process of full Bulgarian sovereignty.

Image source: Bulgarian Declaration of Independence

Bulgaria, Serbia, Greece, and Montenegro allied against the Ottoman Empire and won a swift victory. Bulgaria gained Thrace and access to the Aegean Sea, but disputes over Macedonia with its allies soon led to a second war.

Image source: First Balkan War

Dissatisfied with the division of Macedonia, Bulgaria attacked its former allies Serbia and Greece but was defeated when Romania and the Ottomans joined the war. The Treaty of Bucharest stripped Bulgaria of most of its gains, a national trauma known as the First National Catastrophe.

Image source: Second Balkan War

Seeking to revise the Treaty of Bucharest, Bulgaria entered World War I allied with Germany and Austria-Hungary. It occupied Macedonia and part of Dobruja but was exhausted by 1918, capitulating at the Armistice of Salonica and losing access to the Aegean under the Treaty of Neuilly.

Image source: Bulgaria during World War I

The military organization Zveno seized power in a coup, dissolving parliament and banning political parties. The coup began a period of royal authoritarianism consolidated by Tsar Boris III, ending Bulgaria's interwar parliamentary democracy.

Under pressure from Germany, Bulgaria signed the Tripartite Pact and allowed Wehrmacht passage to attack Greece and Yugoslavia. It regained Macedonia and Thrace but declined to declare war on the Soviet Union.

Image source: Bulgaria during World War II

After Soviet declarations of war and a communist-led coup on September 9, 1944, the new Fatherland Front government declared war on Nazi Germany. Bulgarian forces fought alongside the Red Army in Yugoslavia and Hungary until the war's end.

A referendum abolished the monarchy and proclaimed Bulgaria a people's republic under communist rule. Tsar Simeon II and the royal family went into exile, and the Bulgarian Communist Party consolidated one-party control for over four decades.

Image source: People's Republic of Bulgaria

Todor Zhivkov ruled Bulgaria for 35 years, the longest tenure of any Eastern bloc leader. His era brought industrialization and Soviet alignment, including the controversial assimilation campaign against the Turkish minority in the 1980s, before his fall during the revolutions of 1989.

Image source: Todor Zhivkov

On the day the Berlin Wall fell, the Bulgarian Communist Party removed Todor Zhivkov from power. The move opened the way to multiparty elections in 1990, a new constitution in 1991, and Bulgaria's transition to democracy and a market economy.

Image source: Revolutions of 1989

The Grand National Assembly adopted Bulgaria's current constitution, establishing a parliamentary republic with separation of powers, multiparty democracy, and protection of minority rights, cementing the country's post-communist transition.

Image source: Constitution of Bulgaria

Bulgaria became a full member of NATO alongside six other former communist states, marking its integration into Western defense structures and a decisive geopolitical reorientation away from its Soviet past.

Image source: NATO

Bulgaria and Romania acceded to the European Union, completing Bulgaria's integration into European political and economic institutions. Membership brought structural funds and free movement, though the country continued to face challenges with corruption and judicial reform.

Image source: 2007 enlargement of the European Union