1945 Atomic bomb detonated (Hiroshima) 1950 Korean War begins 1964 - 1973 Vietnam War 1969 Armstrong first person on moon 1986 Nuclear disaster at Chernobyl

1903 Wright brothers 1st plane flight 1912 Titanic sinks on maiden voyage 1914 - 1918 World War I 1922 USSR formed by Soviet states 1939 - 1945 World War II

1854 Crimean War with Russia 1869 Opening of Suez Canal 1871 Franco - Prussian War 1895 Marconi invents wireless telegraphy 1899 Boer War begins

							Johannes de Gier  b.1846 Harmelen, Netherlands  d.1906 Harmelen, Netherlands
				Gerrit de Gier  b.1877 Harmelen, Netherlands  d.1950			Margaretha van Beusekom  b.1853 Willeskop, Netherlands  d.1927 Haastrecht, Netherlands
			Wim de Gier  b.           d.				Hendrik Burggraaf  b.           d.
				Niesje Burggraaf  b.1878 Kamerik, Netherlands  d.			Neeltje Hogendoorn  b.           d.
	Wim M.H. de Gier  b.           d.

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