Acarnania in the context of "Crithote (promontory)"

Aetolia-Acarnania (Greek: Αιτωλοακαρνανία, Aitoloakarnanía, Greek pronunciation: [etolo.akarnaˈni.a]) is one of the regional units of Greece. It is part of the geographic region of Central Greece and the administrative region of West Greece. A combination of the historical regions of Aetolia and Acarnania, it is the country's largest regional unit. Its capital is Missolonghi for historical reasons, with its biggest city and economic centre at Agrinio. The area is now connected with the Peloponnese peninsula via the Rio-Antirio Bridge. The surrounding regional units take in Arta in Epirus, a narrow length bordering Karditsa of Thessaly, Evrytania to the northeast, and Phocis to the east.

The Aetolian (or Aitolian) League (Ancient Greek: Κοινὸν τῶν Αἰτωλῶν) was a confederation of tribal communities and cities in ancient Greece centered in Aetolia in Central Greece. It was probably established during the late Classical or the early Hellenistic era. Two annual meetings were held at Thermon and Panaetolika. The league occupied Delphi and steadily gained territory after its victory there against the Gauls in 279 BC. By the end of the 3rd century BC, it controlled the whole of central Greece with the exception of Attica, Euboea, Boeotia and northwestern Acarnania. At its peak, the league's territory included Locris, Phocis, Doris, Malis, Dolopia, Achaia Phthiotis, Ainis, Oetaea, Ambracia and parts of Acarnania. In the latter part of its power, certain Greek city-states out of central Greece joined the Aetolian League such as the Arcadian cities of Mantineia, Tegea, Phigalia and Kydonia on Crete.

During the classical period the Aetolians were not highly regarded by other Greeks, who considered them to be semi-barbaric and reckless. However, during the Hellenistic period, they emerged as a dominant state in central Greece and expanded by annexing several Greek city-states to the League after their victory against the Gauls in 279 BC. Their League had a complex political and administrative structure. The Aetolian League fought against Macedon and the Achaean League in the Social War (220-217 BC), allied with Rome in the First Macedonian War and Second Macedonian War, but then fought against the Romans in an alliance with the Seleucid empire in the Aetolian War before losing its independence to Rome.

Doric or Dorian (Ancient Greek: Δωρισμός, romanized: Dōrismós), also known as West Greek, was a group of Ancient Greek dialects; its varieties are divided into the Doric proper and Northwest Doric subgroups. Doric was spoken in a vast area, including northern Greece (Acarnania, Aetolia, Epirus, western and eastern Locris, Phocis, Doris, and possibly Lower Macedonia and Upper Macedonia), most of the Peloponnese (Achaea, Elis, Messenia, Laconia, Argolid, Aegina, Corinthia, and Megara), the Southern Aegean (Kythira, Milos, Thera, Crete, Karpathos, and Rhodes), as well as the colonies of some of those regions in Cyrene, Magna Graecia, the Black Sea, the Ionian Sea and the Adriatic Sea. It was also spoken in the Greek sanctuaries of Dodona, Delphi, and Olympia, as well as at the four Panhellenic festivals; the Isthmian, Nemean, Pythian, and Olympic Games.

By Hellenistic times, under the Achaean League, an Achaean Doric koine appeared, exhibiting many peculiarities common to all Doric dialects, which delayed the spread of the Attic-based Koine Greek to the Peloponnese until the 2nd century BC. The only living descendant of Doric is the Tsakonian language which is still spoken in Greece today; though critically endangered, with only a few hundred – mostly elderly – fluent speakers left.

Gjin Bua Shpata (sometimes anglicized as John Spata) (fl. 1358 – 29 October 1399) was an Albanian ruler of the despotate of Arta in Western Greece with the title of Despot. Together with Pjetër Losha, he led raids into Epirus, Acarnania and Aetolia in 1358. He was recognized as Despot by the titular Eastern Roman Emperor in the early 1360s and ruled Aetolia (1360s–?), Angelokastron (?–1399), Naupactus (1378–1399), and Arta (1370s–1399). He was born sometime in the first half of the 14th century in Epirus, as his father was a ruler in the region.

During classical antiquity, Albania was home to several Illyrian tribes such as the Albanoi, Ardiaei, Bylliones, Dassaretii, Enchele, Labeatae, Taulantii, Parthini, Penestae, Amantes, and many others, but also Bryges and Epirote tribes, as well as several Greek colonies established on the Illyrian coast in cooperation with the local Illyrians, notably Epidamnos-Dyrrhachium and Apollonia.

The Enchele's polity was the earliest to emerge and centered in Albania. Also the earliest known Illyrian king, Bardylis, emerged in what is now Albania around 400 BC, aiming to make Illyria a regional power interfering with Macedon. He united many southern Illyrian tribes under his realm and defeated the Macedonians and Molossians several times, expanding his dominion over Upper Macedonia and Lynkestis. Before the Rise of Macedon Illyrians were the dominant power in the region. The kingdom of the Taulantii under Glaukias' rule was based in central Albania and dominated southern Illyrian affairs in the late 4th century BC, exerting great influence on the Epirote state through the close ties with the Molossian king Pyrrhus. Under the Ardiaei the greatest known Illyrian kingdom emerged in the 3rd century BC encompassing also northern Albania in its core territory. It became a formidable power both on land and sea by assembling a great army and fleet, and directly ruling over a large area made up of different Illyrian tribes and cities that stretched from the Neretva River in the north to the borders of Epirus in the south, while its influence extended throughout Epirus and down into Acarnania. The dominant power of the Illyrian kingdom in the region ceased after the Illyrian defeat in the Illyro-Roman Wars (229–168 BC). The last known "King of the Illyrians" was Gentius, of the Labeatae tribe.

The Achelous (Greek: Αχελώος, Ancient Greek: Ἀχελῷος Akhelôios), also Acheloos, is a river in Epirus, western Greece. It is 220 km (137 mi) long. It formed the boundary between Acarnania and Aetolia of antiquity. It empties into the Ionian Sea. In ancient times its spirit was venerated as the river god Achelous.

Herodotus, taking notice of the shoreline-transforming power of the Acheloos River, even compared it to the Nile in this respect:

Asopius (Ancient Greek: Ἀσώπιος) was the name of several men of Ancient Greece related to the 5th-century BCE Athenian general Phormio, and the events of the Peloponnesian War:

• Asopius, the father of Phormio. The geographer Pausanias wrote that this man's name was "Asopichus" instead of "Asopius". Nothing further is known of him.
• Asopius, the son of Phormio, and grandson of the above. This Asopius was, at the request of the Acarnanians who wanted someone from Phormio's family to be in the command, sent by the Athenians in the year following his father's naval victories, in 428 BCE (that is, the 4th year of the Peloponnesian War), with 30 ships to Laconia and thereafter to Naupactus. Asopius then sent 18 ships back to Athens, and continued on to raze Oeniadae with his remaining fleet, though the people of that city remained unbowed. Very shortly afterwards, he landed his ground forces on the Leucadian coast and attacked the city of Nericus. In retreat from that assault, Asopius and most of his forces were cut off by a numerically superior force of Leucadians and some coast guards, and were killed.