On this day in 1917, the first US troops arrived in France to fight alongside Britain and France against Germany in World War I.
On this day in 1945, the United Nations Charter was signed in San Francisco.
On this day in 1948, the Western allies began an airlift to Berlin after the Soviet Union blockaded West Berlin.
On this day in 1974, the Universal Product Code was scanned for the first time to sell a package of Wrigley's chewing gum at the Marsh Supermarket in Ohio.
And on this day in 2000, US President Bill Clinton announced the