* Quantum theory proposed

* Queen Victoria dies after 64-year reign

* President McKinley assasinated

* Russo-Japanese War

* Earthquake, fires devastate San Francisco

* Plastic revolutionizes products

* U.S. radio broadcasts begin

* Standard Oil trust busted

* "Titanic" sinks

* Ford creates assembly line

* Archduke Ferdinand assasinated; World War I begins

* Panama Canal opens

* Communism takes over Russia

* Flu epidemic kills 20 million people

* World War I ends

* U.S. rejects League of Nations

* Gandhi starts nonviolent reforms

* Lenin dies; Stalin takes over in Russia

* Scopes evolution trial held

* Lindburgh flies across the Atlantic Ocean

* Babe Ruth hits 60 home runs

* "The Jazz Singer," first movie with sound, released

* Soviet famine kills 25 million

* U.S. stock market crashes

* Japan invades Manchuria

* FDR wins first term in office

* Hitler named chancellor of Germany

* Franklin Roosevelt's New Deal begins

* German repudiates Versailles Treary that ended World War I

* Pilot Amelia Earhart lost somewhere over the Pacific

* Hitler launches "Kristallnacht"

* "War of the Worlds" radio broadcast frightens nation

* Official U.S. debut of TV

* First jet plane takes flight

* Germany invades Poland; World War II begins

* Winston Churchill leads Great Britain

* Franklin Roosevelt elected to unprecedented third term as president

* U.S. licensed TV begins

* Secret project to make atomic bomb begins

* D-Day: Invasion of Normandy

* U.S. tests atomic bomb

* U.S. celebrates Victory in Europe Day (V-E Day)

* 1945 -- Nazi Holocaust exposed

* GI Bill of RIghts strengthened

* ENIAC: World's first computer

* World's nations form U.N.

* Jackie Robinson breaks baseball's color barrier

* Scientists invent transistor

* Marshall Plan unveiled

* Airlift saves Berlin

* Israel achieves statehood

* Truman upsets Dewey in presidential election

* NATO established

* Mao starts communist China

* U.S. defends South Korea

* DNA's structure discovered

* New polio vaccine works

* Korean War ends

Court ends "separate but equal" philosophy

* Alabama bus boycott begins

* Interstate highway system OK'd

* Soviets launch first satellite

* China's famine kills 20 million

* First computer chip patended

* Birth control pill OK'd by FDA

* Gagarian first man in space

* Alan Shepard becomes first American in space

* Berlin Wall goes up

* John Glenn becomes first American in orbit

* "Silent Spring" warns of DDT dangers

* Cuban missile crisis

* Frieden sparks women's rights

* Beatles launch first U.S. tour

* Gulf of Tonkin Resolution ratified

* Congress OK's Civil Rights Act

* Health warnings about smoking issued

* U.S. escalates Vietnam War

* Congress passes voting act

* Martin Luther King assasinated

* Robert F. Kennedy assasinated

* Riots at Democratic Convention in Chicago

* Nixon makes first trip to China

* U.S. troops leave Vietnam

* Eleven Israeli Olympic athletes killed by Arab terrorists

* Roe vs. Wade decision legalizes abortion

* Watergate engulfs Nixon

* Spiro Agnew forced to resign as vice president

* Hank Aaron breaks Babe Ruth's home run record

* President Nixon resigns

* North Vietnam takes Saigon

* Gates, Allen start Microsoft

* Apple II first mass-marketed PC

* First "test-tube baby" born

* Accident at Three Mile Island nuclear power plant releases radiation

* Iran seizes U.S. hostages

* John Lennon murdered

* AIDS virus discovered

* Gorbechev begins "glasnost"

* Shuttle "Challenger" explodes

* Chernobyl nuclear plant explodes

* World Wide Web invented

* Berlin Wall falls

* Persian Gulf War

* Soviet Union dissolves

* Apartheid ends in South Africa

* Lockout/strike shuts down baseball season, cancels World Series

* Oklahoma City federal building bombed

* Scientists clone sheep

* Pathfinder sends Mars photos

* Mark McGwire hits 70 home runs

* President Clinton impeached/acquited

* NATO nations wage military campaign in Yugoslavia