Peruvian legend notes that Manco Capac led his followers from the caves near Pakaritampu, south of Cusco, Peru and founded the Inca dynasty in 1200. Continue reading
Galileo Galilei Discovered Jupiter’s Moons
Galileo Galilei, Italian astronomer discovered Jupiter’s satellites by telescope then published in the book Siderius nuncius (The Starry Messenger), in 1610. Continue reading
First Published Crossword Puzzle
Arthur Wynne prepared and published the first crossword puzzle in New York World on December 21, 1913. Continue reading
Mass Production of Screws and Bolts
England mass-produced screws and bolts in 1800, following Henry Maudslay’s metal lathe innovation. Continue reading
First International Chess Tournament in London
Howard Staunton, top British chess player organized the first international chess tournament Continue reading
Alfred Nobel Provides Dynamite Demonstration
Alfred Nobel demonstrated detonating a stable amount of nitroglycerin-based explosive to test Continue reading
Adoption of National US Flag
The Second Continental Congress of the United States of America Continue reading
Invention of the Mass Spectrometer
Joseph John Thomson invented the mass spectrometer or parabola spectrograph in Cambridge, England in 1913. Continue reading
King Louis of Bavaria
King Louis II of Bavaria, Germany was crowned in 825. Continue reading
Pope Initiates First Christian Inquisition
Pope Gregory IX instituted the Papal Inquisition in 1231, to eradicate the Cathari and Waldensians heretics living in Italy and France. Continue reading