The Una is a border river between Bosnia and Herzegovina and Croatia and a right tributary of the Sava river. It is part of the Black Sea drainage basin, and its watershed has a size of 10,200 km2 (3,900 sq mi), of which 8,080 km2 (3,120 sq mi) belongs to Bosnia and Herzegovina, and 2,120 km2 (820 sq mi) to Croatia. The total length of the river is 212 km (132 mi). The source of the river is located near the village of Donja Suvaja in Croatia, and its mouth is located near the village of Jasenovac, on the border with Bosnia. The largest right tributaries are the Krka, Unac, Krušnica and Sana rivers, and the largest left tributary is the Klokot river. Its longest headwater is the Unac river. The largest and most important city located on the river is Bihać. Other, important cities and towns are Bosanska Krupa, Bosanski Novi and Bosanska Kostajnica. The river is characterized by a multitude of waterfalls, rapids, karst springs and relatively untouched nature. A large part of the upper river is part of the Una National Park.
The Štrbački buk waterfall on the Una river
Downstream view of the confluence of the Una and Sana rivers
The lower course of the Sana
The Unac before Martin Brod
Croatia, officially the Republic of Croatia, is a country located at the crossroads of Central and Southeast Europe. Its coast lies entirely on the Adriatic Sea. Croatia borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herzegovina and Montenegro to the southeast, and shares a maritime border with Italy to the west. Its capital and largest city, Zagreb, forms one of the country's primary subdivisions, with twenty counties. Other major urban centers include Split, Rijeka and Osijek. The country spans 56,594 square kilometres, and has a population of nearly 3.9 million.
Coronation of King Tomislav by Oton Iveković
Ban Josip Jelačić at the opening of the first modern Croatian Parliament (Sabor), June 5, 1848. The Croatian tricolour flag can be seen in the background.
Mass protests in Zagreb against the unification of the State of Slovenes, Croats and Serbs with the Kingdom of Serbia in 1918.
Stjepan Radić, leader of the Croatian Peasant Party who advocated federal organisation of the Yugoslavia at the assembly in Dubrovnik, 1928. His death at the end of the same year as a result of an assassination in the National Assembly by NRS member, Serbian nationalist politician Puniša Račić, leads the country to a serious political crisis.