Bulgaria, officially the Republic of Bulgaria, is a country in southeastern Europe. It is bordered by Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. With a territory of , Bulgaria is Europe's 16th-largest country. 

Organised prehistoric cultures began developing on current Bulgarian lands during the Neolithic period. Its ancient history saw the presence of the Thracians, Greeks, Persians, Celts, Romans, Goths, Alans and Huns. The emergence of a unified Bulgarian state dates back to the establishment of the First Bulgarian Empire in 681 AD, which dominated most of the Balkans and functioned as a cultural hub for Slavs during the Middle Ages. With the downfall of the Second Bulgarian Empire in 1396, its territories came under Ottoman rule for nearly five centuries. The Russo-Turkish War of 1877–78 led to the formation of the Third Bulgarian State. The following years saw several conflicts with its neighbours, which prompted Bulgaria to align with Germany in both world wars. In 1946 it became a one-party socialist state as part of the Soviet-led Eastern Bloc. In December 1989 the ruling Communist Party allowed multi-party elections, which subsequently led to Bulgaria's transition into a democracy and a market-based economy.
When were the first Bulgarian cultures started?
Were the Greeks ever in the area?
How many others are listed?
About when was the first unified state there?
What was it called?
What area did it control?
Who was there?
Was this during the Renaissance?
What was this time period called?
What occurred in 1396?
Who took over then?
Were they in charge for a long time?
What was the outcome of the Russo-Turkish War?
What year was that?
Did they join the allies in WW2?
Were they democratic in the years after the war?
Did they ever become that?
When?\
What body of water is Bulgaria west of?
How many countries in Europe are bigger?
the Neolithic period
n current Bulgarian lands during the Neolithic period
yes
the presence of the Thracians, Greeks
seven
Thracians, Greeks, Persians, Celts, Romans, Goths, Alans and Huns
681 AD
a unified Bulgarian state dates back to the establishment of the First Bulgarian Empire in 681 AD
the First Bulgarian Empire
 the First Bulgarian Empire in 681 AD
most of the Balkans
which dominated most of the Balkans
Slavs
 functioned as a cultural hub for Slavs
no
 during the Middle Ages
the Middle Ages
during the Middle Ages
the downfall of the Second Bulgarian Empire
the downfall of the Second Bulgarian Empire in 1396
the Ottomans
, its territories came under Ottoman rule
yes
 for nearly five centuries
the formation of the Third Bulgarian State
The Russo-Turkish War of 1877–78 led to the formation of the Third Bulgarian State
1877–78
The Russo-Turkish War of 1877–78
no
Bulgaria to align with Germany in both world wars
no
 In 1946 it became a one-party socialist state
yes
led to Bulgaria's transition into a democracy
After December 1989
In December 1989 the ruling Communist Party allowed multi-party elections
the Black Sea
 the Black Sea to the east
15
 Europe's 16th-largest country