Read and learn about history. Pick out a good one for us.
1818 – French physicist Augustin Fresnel submits his prizewinning "Memoir on the Diffraction of Light", precisely accounting for the limited extent to which light spreads into shadows, and thereby demolishing the oldest objection to the wave theory of light.
Adolf Hitler (German: [ˈadɔlf ˈhɪtlɐ] (listen); 20 April 1889 – 30 April 1945) was a German politician and leader of the Nazi Party (Nationalsozialistische Deutsche Arbeiterpartei; NSDAP). He rose to power as the chancellor of Germany in 1933 and then as Führer in 1934.[a] During his dictatorship from 1933 to 1945, he initiated World War II in Europe by invading Poland on 1 September 1939. He was closely involved in military operations throughout the war and was central to the perpetration of the Holocaust.