Answer:
June 28, 1914. Archduke Francis Ferdinand is assassinated.
July 28, 1914. Austria-Hungary declares war on Serbia, beginning World War I.
August 2-7, 1914. Germany invades Luxembourg and Belgium. ...
August 10, 1914. Austria-Hungary invades Russia.
September 9, 1914. ...
February 18, 1915. ...
April 25, 1915. ...
May 7, 1915.
Step-by-step explanation: