1917 - The Battle of Arras began as Canadian troops began a massive assault on Vimy Ridge.
1918 - Latvia proclaimed its independence.
1921 - The Russo-Polish conflict ended with signing of Riga Treaty.
1928 - Mae West made her debut on Broadway in the production of “Diamond Lil.”
1940 - Germany invaded Norway and Denmark.
1942 - In the Battle of Bataan, American and Filipino forces were overwhelmed by the Japanese Army.
1945 - National Football League officials decreed that it was mandatory for football players to wear socks in all league games.
1945 - At Bari, Italy, the Liberty exploded and killed 360 people. The ship was carrying aerial bombs.
1947 - 169 people were killed and 1,300 were injured by a series of tornadoes in Texas, Oklahoma and Kansas.
1950 - Bob Hope made his first television appearance on “Star-Spangled Review” on NBC-TV.
1957 - The Suez Canal was cleared for all shipping.
1959 - NASA announced the selection of America’s first seven astronauts.
1963 - Winston Churchill became the first honorary U.S. citizen.
1965 - “TIME” magazine featured a cover with the entire “Peanuts” comic gang.
1965 - The Houston Astrodome held its first baseball game.
1967 - The first Boeing 737 was rolled out for use.
1968 - Murdered civil rights leader Martin Luther King Jr., was buried.
1976 - The U.S. and Russia agreed on the size of nuclear tests for peaceful use.
1981 - The U.S. Submarine George Washington struck and sunk a small Japanese freighter in the East China Sea. The Nissho Maru’s captain and first mate died.
1983 - The space shuttle Challenger concluded it first flight.
1984 - Nicaragua asked the World Court to declare U.S. support for guerilla raids illegal.
1985 - Japanese Premier Nakasone urged Japanese people to buy foreign products.
1986 - It was announced that Patrick Duffy’s character on the TV show Dallas would be returning after being killed off.
1987 - Dikye Baggett became the first person to undergo corrective surgery for Parkinson’s disease.
1988 - The U.S. imposed economic sanctions on Panama.