During which period Rositsa Yanakieva served as the Mayor of a city in Europe's 16th-largest country?
Bulgaria Bulgaria ( ; Bulgarian: България , "Bǎlgariya "), officially the Republic of Bulgaria (Bulgarian: Република България , "Republika Bǎlgariya ", ] ), 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 110994 km2 , Bulgaria is Europe's 16th-largest country.
Bilbao Bilbao ( ; ] ; Basque: "Bilbo" ] ) is a city in northern Spain, the largest city in the province of Biscay and in the Basque Country as a whole. Bilbao is the tenth largest city in Spain, with a population of 345,141 as of 2015. The Bilbao metropolitan area has roughly 1 million inhabitants, making it one of the most populous metropolitan areas in northern Spain; with a population of 875,552 the comarca of Greater Bilbao is the fifth-largest urban area in Spain. Bilbao is also the main urban area in what is defined as the Greater Basque region.