world war 1 By kholoud-reme.khateeb 191 austria declared war onto serbia 1815 britains passenger ship went down 1817 us entered the war 1817 airplanes were used for war Period: 1870 to 1920 leading to the beginning and aftermath of WWI world war 1 1871 when germany became unified nation 1871 germany surpassed britain 1878 serbia's independence 1901 japan & russia went to war over manchuri 1904 russian japanese war 1907 brits joined triple allies 1910 manchuria went back to china 1914 world war 1 1914 japan wanted war with germany Aug 23, 1914 japan declared war on germans 1915 italy joined allies 1917 russia had a withdraw from the war 1917 russia withdraw from war Apr 4, 1917 us entered the war Nov 11, 1918 last day of war