What happened May 1990 AD

In May 1990, Putin was appointed as an adviser on international affairs to the Mayor of Leningrad Anatoly Sobchak.

In May 1990, Kasparov took part in the creation of the Democratic Party of Russia.

Latvia declared the restoration of independence on May 4, 1990, with the declaration stipulating a transitional period to complete independence.

On May 7, 1990, Ivars Godmanis of the Latvian Popular Front was elected chairman of the Council of Ministers (the equivalent of being Latvia's Prime Minister).

On May 22, Microsoft launched Windows 3.0, featuring streamlined user interface graphics and improved protected mode capability for the Intel 386 processor.

A tense atmosphere prevailed on May 13, 1990, when a football game was held at Zagreb in Maksimir Stadium between Zagreb's Dinamo team and Belgrade's Red Star. The game erupted into violence between the Croatian and Serbian fans and with the police.

On 14 May 1990, the weapons of the TO of Croatia, in Croat-majority regions, were taken away by the JNA, preventing the possibility of Croatia having its own weapons as was done in Slovenia. Borisav Jović, Serbia's representative in the Federal Presidency and a close ally of Slobodan Milošević, claimed that this action came at the behest of Serbia.

On May 29, 1990, Yeltsin was elected chair of the Presidium of the Supreme Soviet of the RSFSR.

Buffett became a billionaire when Berkshire Hathaway began selling class A shares on May 29, 1990.

On 30 May 1990, the new Croatian Parliament held its first session.