Cham Albanians in the context of "Northern Epirus"

Tosk (Albanian definite form: toskërishtja) is the southern group of dialects of the Albanian language, spoken by the ethnographic group known as Tosks. The line of demarcation between Tosk and Gheg (the northern variety) is the Shkumbin River. Tosk is the basis of the standard Albanian language.

Major Tosk-speaking groups include the Myzeqars of Myzeqe, Labs of Labëria, Chams of Çamëria, Arvanites of Greece and the Arbëreshë of Italy, as well as the original inhabitants of Mandritsa in Bulgaria. In North Macedonia, there were approximately 3000 speakers in the early 1980s.

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.