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Abraham Lincoln of the North and Jefferson of the South began the war that would determine the fate of the slaves of America.
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Abraham Lincoln delivers his most famous speech in which he declares the slaves of the South of America to be free by January 1st, 1864.
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The law of Octaves is that if the chemical elements are arranged according to increasing atomic weight, then those with similar physical and chemical properties occur after each interval of seven elements. It was discovered by J.A.R. Newlands.
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John Wilkes Booth shot Abraham Lincoln in Ford's Theater as revenge for destroying the Confederate States of America.
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The Republicans of U.S. Congress in an attempt to remove the Democrat from his presidency position and obtain full power of the government impeached Andrew Johnson.
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The Russian chemist published the first periodic table just a few years after the Law of Octaves was published and set the precedent for all later periodic tables.
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The electron was discovered by J. J, Thomson of England. He found that many different metals release cathode rays, and that cathode rays were made of electrons, very small negatively charged particles.
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This war between Spain and America was fought over the colonies of the Americas and ended in an American victory.
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Thomson of England suggested that an atom is composed of electrons surrounded by a soup of positive charge to balance the electrons' negative charges, like negatively charged “plums” surrounded by positively charged “pudding”.
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This earthquake in the U.S. state of California devastated San Francisco and is still, by record, one of the largest earthquakes ever recorded.
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Rutherford of England found that if you shot a beam of alpha particles at a sheet of gold foil, some of the particles are deflected. This led him to deduce that dense nucleuses of atoms caused this.
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Ernest Rutherford of England discovered the Proton when he was exploring radioactivity, he did an experiment in which he discovered that the atom must have a concentrated positive center charge that contains most of the atom's mass.He said the nucleus contained a positively charged particle know as the Proton.
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The Titanic, a ship made by White Star Line, wrecked into an Ice burgh and sank to the bottom of the North Atlantic ocean on its journey from Southampton, England to New York, New York in the USA
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Niels Bohr of Denmark created a model of the Atom that had a positively charged nucleus in the center and negatively charged electrons swirling around it.
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Moseley, an English Physicist, found in the K line of the X-Ray spectra of each element, the square root of a frequency increased by a linear amount.
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World War I, also known as the Great War, was the first worldwide conflict to take place and began after Archduke Franz Ferdinand was assassinated in Sarajevo, Bosnia-Herzegovina
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The Austrian physicist described quantum mechanical behavior and his equation describes how the wavefunctions of physical systems evolve over time.
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The Great Depression was a worldwide economic depression that lasted nearly ten years. It started when stocks fell dramatically on October 29, 1929, and in a panic, people attempted to pull their money from banks which only made it worse.
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James Chadwick of England used scattering data to calculate the mass of this neutral particle.
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World War Two started when Hitler invaded Poland in September of 1939.
