Cham Albanians in the context of "Tosk"

Northern Epirus (Greek: Βόρεια Ήπειρος, Vóreia Ípeiros; Albanian: Epiri i Veriut) is a term used for specific parts of southern Albania which were first claimed by the Kingdom of Greece in the Balkan Wars and later were associated with the Greek minority in Albania and Greece-Albania diplomatic relations in the region. First used by Greece in 1913, upon the creation of the Albanian state following the Balkan Wars, it was originally used in a political and diplomatic context rather than a clearly defined geographical one. Today, the term is used mostly by Greeks and is associated with the existence of a substantial ethnic Greek minority in the region and had acquired in the past irredentist connotations (Autonomous Republic of Northern Epirus).

With the outbreak of the First Balkan War (1912–13) and the Ottoman defeat, the Greek army entered the region and claimed it. The term started to be used by the Kingdom of Greece in 1913, upon the creation of the Albanian state following the Balkan Wars, and the area's incorporation into the latter. During this period, the Greek Army and Greece-backed irregulars used violence against local Albanians and have been accused of atrocities against civilians. In the spring of 1914, the Autonomous Republic of Northern Epirus was proclaimed by ethnic Greeks and pro-Greek parts of the population with official support by Greece and recognized by the Albanian government, though it proved short-lived as the First World War started. Greece held the area between 1914 and 1916 and unsuccessfully tried to annex it in March 1916. In 1917 Greek forces were driven from the area by Italy, in accordance with a general consensus in the Entente, and as a result Italy took over most of southern Albania and part of northwestern Greece. The Paris Peace Conference of 1919 awarded the area to Greece, however the area reverted to Albanian control in November 1921, following Greece's defeat in the Greco-Turkish War and local politics like the creation of the Albanian Autonomous Province of Korçë under French-Albanian administration. During the interwar period, Greece and Albania followed a détente while Greece officially recognized Albanian control over the region and focused more on promoting minority rights for Greek language and culture. The situation of the Greeks in Albania during this period was influenced by the fluctuations in the relations between the two countries, which was also linked with Greece's treatment of its Cham minority.

The Kingdom of Albania was in personal union with the Kingdom of Italy following the Italian invasion of Albania in 1939 and until the German occupation in September 1943. It is also referred to as Italian Albania or Greater Albania, and was a state controlled by Fascist Italy. The monarch was Italian King, Victor Emmanuel III, who was represented in Albania by Italian governors. During this time, Albania ceased to exist as an independent country and became an autonomous part of the Italian Empire. Officials intended to make Albania part of a Greater Italy by assimilating Albanians as Italians and colonizing Albania with Italian settlers from the Italian peninsula to transform it gradually into an Italian land.

In the Treaty of London during World War I, the Triple Entente had promised territories in Albania to Italy as a reward for fighting against the Central Powers. Italian Fascists claimed that Albanians were ethnically linked to Italians through association with the prehistoric populations, and that the major influence exerted by the Roman and Venetian empires over Albania gave Italy the right to possess it. In addition, several hundred thousand ethnic Albanians had already been absorbed into southern Italy, which was used to justify annexation as a measure that would unite all Albanians into one state. Italy supported Albanian irredentism, directed against the predominantly Albanian-populated Kosovo in Yugoslavia, but also against Epirus in Greece, particularly the border area of Chameria, inhabited by the Cham Albanian minority.

Albanians in Greece (Albanian: Shqiptarët në Greqi; Greek: Αλβανοί στην Ελλάδα, romanized: Alvanoí stin Elláda) are people of Albanian ethnicity or ancestry who live in or originate from areas within modern Greece. They are divided into distinct communities as a result of different waves of migration. Albanians first migrated into Greece during the late 13th century. The descendants of populations of Albanian origin who settled in Greece during the Middle Ages are the Arvanites, who have been fully assimilated into the Greek nation and self-identify as Greeks. Today, they still maintain their distinct subdialect of Tosk Albanian, known as Arvanitika, although it is endangered as the younger generations no longer speak it due to language attrition.

The Chams are an Albanian group from the coastal parts of Epirus, in northwestern Greece and the southernmost part of Albania. The Chams of Muslim faith were expelled from Epirus during World War II after large parts of their population collaborated with the Axis occupation forces. Greek Orthodox Albanian communities have been assimilated into the Greek nation.

Chameria (also spelled Çameria; Albanian: Çamëria; Greek: Τσαμουριά, romanized: Tsamouriá) is a historical region along the coast of the Ionian Sea in southwestern Albania and northwestern Greece, traditionally associated with the Albanian ethnic subgroup of the Chams. For a brief period (1909-1912), three kazas (Filat, Aydonat and Margiliç) were combined by the Ottomans into an administrative district called Çamlik sancak. During the interwar period, the toponym was in common use and the official name of the area above the Acheron river in all Greek state documents. The term is used today mostly by Albanians and it is obsolete in Greek, surviving in some old folk songs. Most of what is called Chameria is divided between parts of the Greek regional units of Thesprotia, Preveza, and Ioannina (some villages at the western side); and the municipality of Konispol at the southernmost extremity of Albania. Apart from geographic and ethnographic usages, in contemporary times within Albania the toponym has also acquired irredentist connotations.