By 1920, the state was incorporated into the Transcaucasian Socialist Federative Soviet Republic, and in 1922 became a founding member of the Soviet Union.
In 1936, the Transcaucasian state was dissolved, transforming its constituent states, including the Armenian Soviet Socialist Republic, into full Union republics.
During the late 6th century BC, the first geographical entity that was called Armenia by neighbouring populations was established under the Orontid Dynasty within the Achaemenid Empire, as part of the latters' territories.
The ancient Armenian kingdom was split between the Byzantine and Sasanian Empires around the early 5th century.
Under the Bagratuni dynasty, the Bagratid Kingdom of Armenia was restored in the 9th century.
The unique Armenian alphabet was invented by Mesrop Mashtots in 405 AD.
Armenia is a member of the Eurasian Economic Union, the Council of Europe and the Collective Security Treaty Organization.
The Nairi people (12th to 9th centuries BC) and Urartu (1000–600 BC) successively established their sovereignty over the Armenian Highlands.
Each of the aforementioned nations and tribes participated in the ethnogenesis of the Armenians.
A large cuneiform lapidary inscription found in Yerevan established that the modern capital of Armenia was founded in the summer of 782 BC by King Argishti I.
Yerevan is the world's oldest city to have documented the exact date of its foundation.
The Ancient Greek terms Xenophon, a Greek general serving in some of the Persian expeditions, describes many aspects of Armenian village life and hospitality in around 401 BC.