1919. A Soviet regime is established in Belarus.
1922. Belarus becomes a member of the USSR.
1923. The forced mass collectivization of agricultural lands begins.
1944. After 4 years of occupation by Nazi Germany, Minsk is recaptured by the Soviet Army.
1986. The Chernobyl nuclear power station accident in Ukraine leaks radiation into Belarus.
1990. Belarus declares state sovereignty from the USSR.
1991. Belarus declares independence. Belarus, along with Russia and Ukraine, forms the CIS.
1994. Russia and Belarus announce a monetary union, which is abandoned by Russia a year later. Alexander Lukashenka is elected as the first president of independent Belarus.
1995. Belarus joins NATO's Partnership for Peace Program.
1995. Russia and Belarus allow the free movement of certain goods across their border.
1996. The last nuclear weapon left over from the Soviet-era is removed from Belarusian territory.
1997. Russia and Belarus sign the Act of Union, which envisions the union of the 2 countries.