Marie Curie - U.S. President Warren G. Harding Received Her at The White House
Place: Washington D.C., U.S.
Details: In 1921, U.S. President Warren G. Harding received her at the White House to present her with the 1 gram of radium collected in the United States, and the First Lady praised her as an example of a professional achiever who was also a supportive wife.
Neil Armstrong-The reason for choosing Armstrong to be the First
Monday Apr 14, 1969 - Washington D.C., U.S.
Neil Armstrong-The First Moon walk
Monday Jul 21, 1969 at 05:56:00 AM - The Moon
3D printing-3D Systems Corporation released the first commercial 3D printer
1986 - Alexandria, Virginia, U.S.
3D printing-Chuck Hull of 3D Systems Corporation filed his own patent
1984 - Alexandria, Virginia, U.S.
3D printing-American entrepreneur Bill Masters filed a patent
Monday Jul 2, 1984 - Alexandria, Virginia, U.S.
Josip Broz Tito-Fired from his employment
1921 - Zagreb, Croatia
Incandescent light bulb-The First Double-Coil bulb using a coiled coil tungsten filament
1921 - Japan
Mongolian Revolution of 1990-The Mongolian People's Party Took Power
1921 - Ulaanbaatar, Mongolia
Chinese Civil War-Sun Yat-sen turned to the Soviet Union
1921 - Soviet Union, (Russia)
Irish War of Independence-Two years after the war had started
Jan, 1921 - Ireland