1433, the great voyages of Admiral Zheng He
1453, the fall of Constantinople
1455, Gutenberg's print revolution
1492, the Columbian exchange
1600, the British East India Company
1648, the treaty of Westphalia
1676, Van Leeuwenhoek's microscope
1751, Diderot's enlightenment encyclopedia
1787, the American experiment
1789, the French Revolution
1838, the British slavery abolition act
1839, the opium war in China
1859, Darwin and the Origin of species
1893, first women voters in New Zealand
1896, the invention of motion pictures
1903, Kitty Hawk and powered flight
1904, the Russo-Japanese war
1928, the discovery of penicillin
1942, the dawn of the atom
1969, walking on the moon
1972, China enters the world balance
1989, the fall of the Berlin wall
2004, the rise of social media.
