ib hl history

Global

September 1814
January 1848 - December 1848

German and Italian Unification

July 1831
1834
1848
1854 - 1856
April 1859 - July 1859
February 1864 - October 1864
June 1866 - August 1866
July 1870 - May 1871
1871
May 1872
1873
1878
1879
1884
1887
1929

World War I

28 July 1914 - 11 November 1918

World War II

Russia

March 1855 - March 1881
March 1861
April 1881 - November 1894
November 1894 - March 1917
February 1904 - September 1905
22 January 1905 - 16 June 1907
1913
March 1917
November 1917
November 1917 - October 1922
3 March 1918
July 1918

China