Aden

City · c. 1969 CE · in the Middle East

Capital of People's Democratic Republic of Yemen (1969–1989), Republic of Yemen (1990–1990).

Lobamba (c. 1969 CE): Capital of Eswatini (1969–today).
Belmopan (1970 CE): Capital of Belize (1983–today).
Zomba (c. 1967 CE): Capital of Malawi (1967–1975).
Sri Jayawardenepura Kotte (c. 1972 CE): Capital of Sri Lanka (1972–today).
Singapore (1965 CE): Capital of Republic of Singapore (1967–today).
Gaborone (1965 CE): Capital of Republic of Botswana (1967–today).
Dhaka (c. 1973 CE): Capital of People's Republic of Bangladesh (1973–today).
Abu Dhabi (c. 1973 CE): Capital of United Arab Emirates (1973–today).
Suva (c. 1973 CE): Capital of Republic of Fiji (1973–today).
Putrajaya (c. 1963 CE): Capital of Malaysia (1963–today).

Around the same time and place

Haile Selassie (1892 CE – 1975 CE): Emperor of Ethiopia from 1930 to 1974 who appealed to the League of Nations against the Italian invasion; deposed by the Derg military junta in 1974.
Second Italo-Ethiopian War (1935–1937 CE): Fascist Italy invaded Ethiopia in October 1935, using chemical weapons, and occupied Addis Ababa in May 1936; the League of Nations failed to stop it.
Lucy discovered (1974 CE): Partial skeleton of Australopithecus afarensis about 3.2 million years old, found at Hadar in 1974 by Donald Johanson's team.
Unification of Saudi Arabia (1902–1932 CE): Ibn Saud recaptured Riyadh in 1902 and over three decades conquered most of the Arabian Peninsula, proclaiming the Kingdom of Saudi Arabia in 1932.
Khartoum (c. 1956 CE): Capital of Republic of Sudan (1956–today).
African Unity founded (1963 CE): Founded in Addis Ababa on 25 May 1963 by 32 independent African states to promote unity and end colonialism; replaced by the African Union in 2002.
1983–1985 famine in Ethiopia (1983–1985 CE): Famine in northern Ethiopia, worsened by drought and civil war, that killed hundreds of thousands and prompted Band Aid and Live Aid.
Somali Civil War (1991 CE): Conflict that followed the overthrow of Siad Barre in 1991, leading to state collapse, famine and decades of fighting among clans and Islamist groups.