Drina in the context of "Mačva"

The Neretva (pronounced [něreːtʋa], Serbian Cyrillic: Неретва), also known as Narenta, is one of the largest rivers of the eastern part of the Adriatic basin. Four hydroelectric power plants with large dams (higher than 15 metres) provide flood protection, electricity and water storage. The Neretva is recognized for its natural environment and diverse landscapes.

Freshwater ecosystems have suffered from an increasing population and the associated development pressures. One of the most valuable natural resources of Bosnia and Herzegovina and Croatia is its freshwater resource, contained by an abundant wellspring and clear rivers. Situated between the major regional rivers (Drina river on the east, Una river on the west and the Sava river) the Neretva basin contains the most significant source of drinking water.

Prečani (Serbian Cyrillic: Пречани) was a Serbian blanket term used at the end of the 19th- and early 20th century for ethnic Serb communities located preko ("across") the Drina, Sava and Danube rivers, beyond the western and northern borders of the Principality of Serbia and later Kingdom of Serbia, that is, in Austria-Hungary-held Vojvodina, Bosnia and Herzegovina and Croatia. It was thus used to distinguish Serbs of Serbia, Srbijanci ("Serbians") from those in the Austria-Hungary; it was not applied to the Serbs of Montenegro or those in the Ottoman Empire.

In the Habsburg lands – in Kingdom of Dalmatia, the Serbs established the Serb People's Party, while in the Kingdom of Croatia-Slavonia they established the Serb Independent Party. In 1918 the Prečani Serbs formed a notable political constituency that participated in the founding of the State of Slovenes, Croats and Serbs as well as the joining of Banat, Bačka and Baranja with the Kingdom of Serbia. In the first Yugoslavia, their political party, the Independent Democratic Party was important in national politics. After the invasion of Yugoslavia, they were the main target of the World War II persecution of Serbs.

The House of Pavlović, also Radinović or Radenović, or Radinović-Pavlović, was Bosnian noble family who got their name after Radin Jablanić. Radin's father, Jablan, was a founder of Jablanić house, an earlier branch of this medieval Bosnian clan. Jablan's estate was in Jablan village (also Jablanovo, near Lukavica). Later, family extended their feudal possessions from the Middle and Upper Drina river in the eastern parts of medieval Bosnia, known as Pavlovića zemlja, to south-southeastern regions of the Bosnian realm in Hum and Konavle at the Adriatic coast.The family official residence and seat was at Borač and later Pavlovac, above the Prača river canyon, between present-day Prača, Rogatica and Goražde in Bosnia and Herzegovina.

The Sava is a river in Central and Southeast Europe, a right-bank and the longest tributary of the Danube. From its source in Slovenia it flows through Croatia and along its border with Bosnia and Herzegovina, and finally reaches Serbia, feeding into the Danube in its capital, Belgrade.

The Sava is 990 kilometres (615 miles) long, including the 45-kilometre (28 mi) Sava Dolinka headwater rising in Zelenci, Slovenia. It is the largest tributary of the Danube by volume of water, and the second-largest after the Tisza in terms of catchment area (97713km²) and length. It drains a significant portion of the Dinaric Alps region, through the major tributaries of Drina, Bosna, Kupa, Una, Vrbas, Lonja, Kolubara, Bosut and Krka. The Sava is one of the longest rivers in Europe and among the longest tributaries of another river.

Pavle Orlović (Serbian Cyrillic: Павле Орловић) is a semi-mythological hero of the Kosovo cycle of Serbian epic poetry; he was a Serbian knight, one of the military commanders under Prince Lazar that fell at the Battle of Kosovo (1389) against the Ottoman Empire. According to folklore, Orlović was the son of voivode Vuk Orle, the Lord of Soko Grad on the Drina. After the death of Stephen Uroš V the Weak, Orlović held the mining town of Novo Brdo, as well as his father's possessions on Mount Rudnik in central Serbia.

According to legend, Pavle Orlović's four sons escaped their hometown to Čarađe, near Gacko, after the death of their father and fled to Velimlje, a village in Banjani (modern-day Montenegro). After the Ottoman conquest of Banjani, they established several families of the Orlović clan at Čarađe, Bjelice and Cuce.

The Ustaše (pronounced [ûstaʃe]), also known by anglicised versions Ustasha or Ustashe, was a Croatian fascist and ultranationalist organization active, as one organization, between 1929 and 1945, formally known as the Ustaša – Croatian Revolutionary Movement (Croatian: Ustaša – Hrvatski revolucionarni pokret). From its inception and before the Second World War, the organization engaged in a series of terrorist activities against the Kingdom of Yugoslavia, including collaborating with IMRO to assassinate King Alexander I of Yugoslavia in 1934. During World War II in Yugoslavia, the Ustaše went on to perpetrate the Holocaust and genocide against its Jewish, Serb and Roma populations, killing hundreds of thousands of Serbs, Jews, Roma, as well as Muslim and Croat political dissidents.

The ideology of the movement was a blend of fascism, Roman Catholicism and Croatian ultranationalism. The Ustaše supported the creation of a Greater Croatia that would span the Drina River and extend to the border of Belgrade. The movement advocated a racially "pure" Croatia and promoted genocide against Serbs—due to the Ustaše's anti-Serb sentiment—and Holocaust against Jews and Roma via Nazi racial theory, and persecution of anti-fascist or dissident Croats and Bosniaks. The Ustaše viewed the Bosniaks as "Muslim Croats", and as a result, Bosniaks were not persecuted on the basis of race. The Ustaše espoused Roman Catholicism and Islam as the religions of the Croats and condemned Orthodox Christianity, which was the main religion of the Serbs. Roman Catholicism was identified with Croatian nationalism, while Islam, which had a large following in Bosnia and Herzegovina, was praised by the Ustaše as the religion that "keeps true the blood of Croats."