mouth_of_the_watercourse golijska moravica
Bulgaria ( tr . '), officially the Republic of Bulgaria ( tr . '), 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 ___MASK58___ to the east . With a territory of , Bulgaria is Europe ' s 16th - largest country . Montenegro ( or or ; Montenegrin : " ___MASK41___ Gora " /   , meaning " Black Mountain ") is a sovereign state in Southeastern Europe . It has a coast on the Adriatic Sea to the south - west and is bordered by Croatia to the west , Bosnia and Herzegovina to the northwest , Serbia to the northeast , Kosovo to the east , and Albania to the south - east . Its capital and largest city is Podgorica , while Cetinje is designated as the Old Royal Capital (" prijestonica "). ___MASK2___ , is a river in central Serbia , a 308 km - long longer headstream of the ___MASK85___ , which it forms with the ___MASK92___ . It was known as Brongos in antiquity . Romania is a sovereign state located in Southeastern Europe . It borders the Black ___MASK58___ , Bulgaria , Ukraine , Hungary , Serbia , and Moldova . It has an area of and a temperate - continental climate . With 19 . 94 million inhabitants , the country is the seventh - most - populous member state of the European Union . The capital and largest city , Bucharest , with its 1 , 883 , 425 inhabitants is the sixth - largest city in the EU . The Golijska Moravica or simply Moravica ( Serbian Cyrillic :   or  ) is a river in western Serbia . With a length of 98 km , it is the longer headstream of the Zapadna ___MASK80___ ( it forms it with the etinja ) , and thus , of the Velika ___MASK80___ . Its name , Moravica , means little ___MASK80___ in Serbian , and it also gives its name to the surrounding region and the modern Moravica District of Serbia . The Moravica District is one of eight administrative districts of Šumadija and Western Serbia . It is located in the central and south - western parts of Serbia . The name Moravica , derivatives from the river of Moravica , which forms the ___MASK2___ , both passing through the district . According to the 2011 census results , it has a population of 212 , 603 inhabitants . The administrative center of the Moravica district is the city of aak . The Balkan Peninsula , or the Balkans , is a peninsula and a cultural area in Eastern and Southeastern Europe with various and disputed borders . The region takes its name from the Balkan Mountains that stretch from the Serbia - Bulgaria border to the Black ___MASK58___ . Belgrade is the capital and largest city of Serbia . It is located at the confluence of the ___MASK3___ and Danube rivers , where the Pannonian Plain meets the Balkans . Its name translates to " White city ". The urban area of the City of Belgrade has a population of 1 . 34 million , while over 1 . 65 million people live within its administrative limits . etinja ( Serbian Cyrillic :  ) is a river in western Serbia , a 75 km long natural but shorter headstream of the Zapadna ___MASK80___ River . aak is a city and the administrative center of the Moravica District in western Serbia . aak lies on the ___MASK2___ river , which is the second largest river in Serbia after the ___MASK89___ ( 308 km ), and between Šumadija and the Dinaric Alps , in the aak - Kraljevo valley . aak is the ___MASK24___ economic and cultural center of the Moravica District , which includes Gornji Milanovac to the north , Luani to the southwest and Ivanjica to the south . aak borders Požega , Serbia ( Zlatibor District ) to the west , Kni ( Šumadija District ) to the east and Kraljevo ( Raška District ) to the southeast . The lowest altitude is 204 m ( confluence of Bresnika reka and Zapadna ___MASK80___ ) and the highest is 985 m ( the highest peak of Ovar mountain ). It has 58 settlements . The population of the city itself is 73 , 331 , while the population of the municipality is 115 , 337 . aak is 144 km south of the capital city , Belgrade . Pannonia was an ancient province of the Roman Empire bounded north and east by the ___MASK89___ , coterminous westward with Noricum and upper Italy , and southward with Dalmatia and upper Moesia . Pannonia was located over the territory of the present - day western Hungary , eastern Austria , northern Croatia , north - western Serbia , northern Slovenia , western Slovakia and northern Bosnia and Herzegovina . Croatia , officially the Republic of Croatia , is a sovereign state between Central Europe , Southeast Europe , and the Mediterranean . Its capital city is Zagreb , which forms one of the country ' s primary subdivisions , along with its twenty counties . Croatia covers and has diverse , mostly continental and Mediterranean climates . Croatia ' s Adriatic ___MASK58___ coast contains more than a thousand islands . The country ' s population is 4 . 28 million , most of whom are Croats , with the most common religious denomination being Roman Catholicism . Serbia , officially the Republic of Serbia , is a sovereign state situated at the crossroads of Central and Southeast Europe , covering the southern part of the Pannonian Plain and the central Balkans . Relative to its small territory , it is a diverse country distinguished by a " transitional " character , situated along cultural , geographic , climatic and other boundaries . Serbia is landlocked and borders Hungary to the north ; Romania and Bulgaria to the east ; Macedonia to the south ; and Croatia , Bosnia - Herzegovina , and Montenegro to the southwest ; it also claims a border with Albania through the disputed territory of Kosovo . Serbia numbers around 7 million residents , and its capital , Belgrade , ranks among the largest cities in Southeast Europe . Albania (; ), officially the Republic of Albania , is a sovereign state in Southeastern Europe . It has a population of 3 . 03 million as of 2016 . Tirana is the nation ' s capital and largest city , followed by Durrës and Vlorë . Albania is located in the south - western part of the Balkan peninsula , bordered by Montenegro to the northwest , Kosovo to the northeast , the Republic of Macedonia to the east , and Greece to the south and southeast . The country has a coastline on the northern shore of the Mediterranean ___MASK58___ , the Adriatic ___MASK58___ to the west and the Ionian ___MASK58___ to the southwest where the Albanian Riviera begins . Albania is less than from Italy , across the Strait of Otranto which connects the Adriatic ___MASK58___ to the Ionian ___MASK58___ .