In 1912-1913, the Cushing-Drumright oil field began to explode with activity after Thomas B. Slick made his initial discovery in 1912.

In 1913, Woodrow Wilson started the tradition of delivering the State of the Union Address in an in person speech to Congress.

The Rockefeller Foundation was created in 1913 by John D. Rockefeller and focused primarily on medical initiatives around the globe.

Margaret Sanger was the champion of the feminist movement beginning in 1913. She promoted freedom from motherhood via birth control.

Billy Durant lost control of General Motors in 1910 and then started Chevrolet with his race-car driver business partner, Louis Chevrolet.

The Ireland Home Rule Movement began in the 1870s but came to fruition during the period of 1913 to 1920 leading to the Irish Free State.

Henry Ford's moving assembly line changed the way work was done. The period from 1913 to 1920 also transformed the company.

1920 to 1932 was an important time for Germany as it transitioned to the Weimar Republic, in the wake of WWI.

In 1913, three of Europe's most important monarchs attended a wedding in Berlin...and each one of them were cousins.