], Bulgarian Balgarija,
officially Republic of Bulgaria, republic (2011 pop. 7,364,570), 42,823 sq mi (110,912 sq km), SE Europe, on the E Balkan Peninsula. It is bounded by the Black Sea on the east, by Romania on the north, by Serbia and Macedonia on the west, by Greece on the south, and by European Turkey on the southeast. Sofia
is the capital. Other important cities are Varna
(the main Black Sea ports of Bulgaria), Plovdiv
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