Founder of the Inca Dynasty

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