| A | B |
|---|
| Sussex pledge | German U-boats to warn ships before stricking |
| Pres Wilson convince Allies | plan for League of Nations |
| assination of Archduke Ferdinand | act in Bosnia that started WWI |
| Most of Europe drawn into WWI | because of alliances |
| generals not used to killing power of weapons | keep ordering to attack |
| Americans oppose Central Powers | because Germany's frightening militarism |
| Strengthen armed forces | preparedness advocates argue US to |
| US break diplomatic relations | Germany break Sussex pledge |
| after Russian Revolution | Americans willing to join Allies |
| Selective Service | greeted with enthusiasm |
| convoy system | cut merchant marine losses |
| African Americans in WWI | mostly did manual labor |
