What happened on 11 August?

10 events from the Ever-When timeline, ranked by how much they mattered.

1. 1919 Weimar Republic Germany's first parliamentary democracy; created at Weimar 1919, undone by economic crisis and Nazi takeover 1933.
2. 1919 Weimar Constitution adopted Adopted constitution of the post-WW1 German republic.
3. 117 Reign of Hadrian Adoptive successor of Trajan; consolidates frontiers, builds Hadrian's Wall, travels the entire empire.
4. 1965 Watts riots Six-day uprising in Los Angeles after a traffic stop; 34 killed; foreshadows the wave of 'long hot summer' riots of the late 60s.
5. 1973 Birth of hip-hop DJ Kool Herc's South Bronx block party gives rise to hip-hop culture.
6. 3114 BCE Maya Long Count calendar baseline Maya date system anchors creation on 11 August 3114 BCE (Gregorian); accurate astronomical observations underpin religious life.
7. 1804 Austrian Empire proclaimed Anticipating Napoleon's imperial coronation, Francis II declares himself hereditary Emperor of Austria — insurance for the Habsburg title two years before he dissolves the Holy Rom
8. 1492 Alexander VI elected Pope Rodrigo Borgia is elected Pope Alexander VI; a Renaissance papacy by-word for corruption.
9. 991 Battle of Maldon English ealdorman Byrhtnoth killed by raiding Vikings on the Essex coast; subject of the Old English poem.
10. 1942 Hedy Lamarr patents frequency hopping The film star and composer George Antheil patent a jam-proof torpedo guidance system; the idea underlies Bluetooth and wi-fi.