Do Now 2/13

Last updated over 5 years ago
1 question
1

World War I Headlines
(1)  Archduke Franz Ferdinand Assassinated in Sarajevo
(2)  Germany Invades Neutral Belgium to Attack France
(3)                ?                
(4)Germany declares intent to resume unrestricted warfare
(5)U.S. Congress Declares War on Germany

Which headline correctly completes this list of chronological events?