WHAT ALL HAPPENED MAY TO DECEMBER 1990
Find out what all happened May to December 1990

Liechtenstein becomes a member of the United Nations. (18. September 1990)

Iraq occupies Kuwait and the state is annexed to Iraq. This would lead to the Gulf War shortly afterward. (8. August 1990)

After one hundred and fifty years The Herald broadsheet newspaper in Melbourne, Australia, is published for the last time as a separate newspaper. (5. October 1990)

South Ossetia declares its independence from Georgia. (20. September 1990)

Crown Prince Akihito is formally installed as Emperor Akihito of Japan, becoming the 125th Japanese monarch. (12. November 1990)

The first post-Communist presidential and parliamentary elections are held in Romania. (20. May 1990)

In Aramoana, New Zealand, David Gray shoots dead 13 people, in what becomes known as the Aramoana Massacre. (13. November 1990)

The two German states and the Four Powers sign the Treaty on the Final Settlement With Respect to Germany in Moscow, paving the way for German reunification. (12. September 1990)

East Germany and West Germany merge their economies. (30. June 1990)

The Supreme Soviet of the Belarusian Soviet Republic declares independence of Belarus from the Soviet Union. Until 1996 the day is celebrated as the Independence Day of Belarus; after a referendum held that year the celebration of independence is moved to June 3. (27. July 1990)

Microsoft releases the Windows 3.0 operating system. (22. May 1990)

Sri Lankan Civil War: Sri Lankan Army soldiers slaughter 158 civilians. (5. September 1990)

Periodic Great White Spot is observed on Saturn. (24. September 1990)

The Jamaat al Muslimeen attempt a coup d'état in Trinidad and Tobago, occupying the Trinidad and the studios of Trinidad and Tobago Television, holding Prime Minister A. N. R. Robinson and most of his Cabinet as well as the staff at the television station hostage for 6 days. (27. July 1990)

Final independence of Marshall Islands and Federated States of Micronesia after termination of trusteeship. (22. December 1990)

Iraq invades Kuwait, eventually leading to the Gulf War. (2. August 1990)

The Parliament of Croatia adopts the current Constitution of Croatia. (22. December 1990)

An F5 tornado strikes the Illinois cities of Plainfield and Joliet, killing 29 people. (28. August 1990)

The Democratic Republic of Yemen and North Yemen agree to merge into the Republic of Yemen. (21. May 1990)

Armenia declares its independence from the Soviet Union. (23. August 1990)