On 9 September 1919, the National Assembly of Armenia founded the History Museum of Armenia. The museum opened to visitors on August 20, 1921. Its first director was Yervand Lalayan.
On September 16, the new complex of "Zvartnots" International Airport was opened.
During the large-scale war unleashed by Azerbaijan in 2020, the capital of Armenia, Yerevan was turned into a rear, providing assistance to the front.