| 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  | 1804 Napoleon becomes French Emperor 1805 Battle of Trafalgar, Nelson killed 1815 Battle of Waterloo, Napoleon defeat 1830 French Revolution 1837 Queen Victoria assumes throne  | 
![]()  |  Ernst Schwersenski b. d.  | |||||||
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![]()  | ![]()  |  Jacob Louis Bielschowsky b.1805 d.1892 Oels, Wroclaw, Poland  | ||||||
![]()  | ![]()  |  Emanuel Bielschowsky b.1842 d.1890 Oels, Wroclaw, Poland  |  Henriette Ehrlich b. Wodzislaw Slaski, Poland d.1891 Oels, Wroclaw, Poland  | |||||
![]()  |  Marie Bielschowsky b.1883 Oels, Wroclaw, Poland d.1942 Riga, Latvia  | |||||||
![]()  | ![]()  |  Cäcilie Laqueur b.1848 d.  | ||||||
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