Neretva in the context of "Ardiaei"

The Kingdom of Serbia (Serbian: Краљевина Србија / Kraljevina Srbija, or the Serbian Kingdom (Serbian: Српско краљевство / Srpsko kraljevstvo), also known as Kingdom of Serbs (Serbian: Краљевина Срба / Kraljevina Srba); Latin: Regnum Serbiæ; Greek: Βασίλειο της Σερβίας, also known by historical exonym Rascia (Serbian: Рашка / Raška), was a medieval Serbian kingdom in Southern Europe comprising most of what is today Serbia (excluding Vojvodina), Kosovo, and Montenegro, as well as southeastern Bosnia and Herzegovina, parts of coastal Croatia south of the Neretva river (excluding Dubrovnik), Albania north of the Drin River, North Macedonia, and a small part of western Bulgaria. The medieval Kingdom of Serbia existed from 1217 to 1346 and was ruled by the Nemanjić dynasty. The Grand Principality of Serbia was elevated with the regal coronation of Stefan Nemanjić as king, after the reunification of Serbian lands. In 1219, the Serbian Orthodox Church was reorganized as an autocephalous archbishopric, headed by Saint Sava. The kingdom was proclaimed an empire in 1346, but kingship was not abolished as an institution, since the title of a king was used as an official designation for a co-ruler of the emperor.

The Kingdom of Bosnia (Serbo-Croatian: Kraljevina Bosna / Краљевина Босна), or Bosnian Kingdom (Bosansko kraljevstvo / Босанско краљевство), was a medieval kingdom that lasted for nearly a century, from 1377 to 1463, and evolved out of the Banate of Bosnia, which itself lasted from at least 1154.

King Tvrtko I (r. 1353–91) acquired portions of western Serbia and most of the Adriatic coast south of the Neretva River. During the late part of his reign, Bosnia became one of the strongest states in the Balkan Peninsula. However, feudal fragmentation remained important in Bosnia and the Bosnian nobility held significant power, exercising it at the Stanak meetings where members deliberated on matters such as election of the new king or queen and coronations, foreign policy, sale or cession of territory, contracting and signing treaties with neighboring countries, and military issues.

The Kingdom of Croatia (Modern Croatian: Kraljevina Hrvatska, Hrvatsko Kraljevstvo; Latin: Regnum Croatiæ), and since 1060 known as Kingdom of Croatia and Dalmatia (Latin: Regnum Croatiae et Dalmatiae), was a medieval kingdom in Southern Europe comprising most of what is today Croatia (without western Istria, some Dalmatian coastal cities, and the part of Dalmatia south of the Neretva River), as well as most of the modern-day Bosnia and Herzegovina. The Croatian Kingdom was ruled for part of its existence by ethnic dynasties, and the Kingdom existed as a sovereign state for nearly two centuries. Its existence was characterized by various conflicts and periods of peace or alliance with the Bulgarians, Byzantines, Hungarians, and competition with Venice for control over the eastern Adriatic coast. The goal of promoting the Croatian language in the religious service was initially introduced by the 10th century bishop Gregory of Nin, which resulted in a conflict with the Pope, later to be put down by him. In the second half of the 11th century Croatia managed to secure most coastal cities of Dalmatia with the collapse of Byzantine control over them. During this time the kingdom reached its peak under the rule of kings Peter Krešimir IV (1058–1074) and Demetrius Zvonimir (1075–1089).

The state was ruled mostly by the Trpimirović dynasty until 1091. At that point the realm experienced a succession crisis and after a decade of conflicts for the throne and the aftermath of the Battle of Gvozd Mountain, the crown passed to the Árpád dynasty with the coronation of King Coloman of Hungary as "King of Croatia and Dalmatia" in Biograd in 1102, uniting the two kingdoms under one crown.

Daorson was the capital of the Illyrian tribe of the Daorsi (Ancient Greek Δαόριζοι, Δαούρσιοι; Latin Daorsei). The Daorsi lived in the valley of the Neretva River between 300 BC and 50 BC. They came very early into contact with Greek traders acquiring many facies of Greek civilization, and the town acquired a certain degree of Hellenization. After the peace treaty with Rome in 168/167 BC, the Daorsi minted their own coins.

The ruins of Daorson are located at Ošanjići, near Stolac, Bosnia and Herzegovina.

The Herzegovina-Neretva Canton (Croatian: Hercegovačko-neretvanska županija; Bosnian: Hercegovačko-neretvanski kanton; Serbian: Херцеговачко-неретвански кантон, romanized: Hercegovačko-neretvanski kanton) is a federated state and one of ten cantons of the Federation of Bosnia and Herzegovina in Bosnia and Herzegovina.

The canton mainly comprises the Neretva river valley area and parts of Herzegovina west of Mostar, its administrative centre. It is one of the four cantons in the country with a Croatian majority (53.29%). However, in the case of this territory, it is more ethnically divided and is considered to have a mixed population.

The Trebišnjica (Serbian Cyrillic: Требишњица) is a river in Bosnia and Herzegovina, and the right tributary of the Neretva. Before it was utilized for hydro exploitation via various hydrotechnical interventions and systems with different purposes, Trebišnjica used to be a sinking river, rising and sinking through its course before resurfacing at various places from the Neretva river below the Čapljina to the Adriatic coast, and along the coast from the Neretva Delta to Sutorina.

With a total length of 96.5 km (60.0 mi) above the ground, and roughly another 90 km (56 mi) below the surface, the Trebšnjica river is one of the longest sinking rivers in the world with the total of 187 km (116 mi) above and under the ground. In hydrological terms, it represents a sub-basin within the Neretva river basin.