The World Between 1898 and 1972
      1898      Treaty of Peace signed between U.S. and Spain.
                    
        1898      Birth of M.C. Escher.

        1900      Italy’s king is assasinated.

        1903      First flight at Kitty Hawk.

        1905      Einstein’s Theory of Relativity is introduced.

        1906      Upton Sinclair publishes “The Jungle” about the meat
                     packing industry.

        1907      Picasso introduces cubism.

        1909      First man reaches North Pole.

        1910       Alfred Whitehead publishes Principia Mathematicia
                      which tries to develop math based on logic.

        1912      The Titanic sinks.

        1917      World War I begins.

        1923      Jazz singer Bessie Smith records first jazz album.

        1925      Flapper dresses are in style.

        1925      The Great Gatsby is published.

        1929      Stock Market Crashes, start of Depression.

        1936      Margaret Mitchell writes Gone with the Wind.

        1939     World War II begin.

        1941     Japanese attack Pearl Harbor.

        1948     Ghandi assasinated.

        1950     Einstein announced unified-field theory.

        1952     Seat belts are introduced.

        1955     McDonalds is founded.

        1958     NASA is founded.

        1960     Lasers are invented.

        1962    Andy Warhol exhibits his Campbell’s Soup Can.

        1964    The Beatles are popular in United States.

        1969    Neal Armstrong is the first human to walk on the moon.

        1970    Floppy disks for computers are introduced.

        1970    Jimi Hendrix and Janis Joplin die of drug overdoses.

        1972    Pocket Calculators are introduced.

       1972   M.C. Escher dies.