Thracian tribes settle in what is now southeastern Bulgaria, which is dominated by the Macedonian King Alexander the Great and later by the Roman Empire.
The Bulgarian state is established.
The Byzantine Empire rules over Bulgaria until 1185.
The Ottoman Empire completes its conquest of Bulgaria.
Bulgaria declares itself an independent kingdom.
The monarchy is abolished and the Communist Party wins the election.
A new constitution along Soviet lines establishes a one-party state and leads to economy and industry sectors being nationalized.
The Zhivkov government tries to force Turkish minorities to assimilate and take Slavic names. Many resist and in 1989 some 300,000, 3.5% of the country's population, flee the country.
Bulgaria is granted additional freedoms under a new constitution, also proclaiming it to be a parliamentary republic.
Mass privatization programs within the country begin.
Ivan Kostov becomes prime minister and initiates a series of reforms that help stabilize Bulgaria’s economy. The Bulgarian Lev is pegged to the German Mark.
Bulgaria is admitted to NATO.
The Bulgarian Lev is now pegged to the Euro.
Bulgaria joins the European Union.