World War 1 timeline By addyostrom Jun 28, 1914 Franz Ferdinand is assassinated https://www.history.com/this-day-in-history/archduke-ferdinand-assassinated Jul 28, 1914 Austria-Hungary declares war on Serbia https://www.history.com/this-day-in-history/austria-hungary-declares-war-on-serbia Aug 2, 1914 Germany invades Luxembourg and France invades Alsace https://www.britannica.com/place/Belgium/Belgium-and-World-War-I Feb 18, 1915 Germany begins naval blockade on Great Britian https://courses.lumenlearning.com/suny-hccc-worldhistory2/chapter/the-british-naval-blockade/#:~:text=The%20Blockade%20of%20Germany%2C%20or,Austria%2DHungary%2C%20and%20Turkey. May 7, 1915 German U boats sink passenger liner Lusitania, killing 128 US passengers https://www.history.com/topics/world-war-i/lusitania
