WDeclaration of war by the United StatesWUnited States declaration of war on Austria-HungaryWUnited States declaration of war upon BulgariaWUnited States declaration of war on Germany (1917)WUnited States declaration of war upon Germany (1941)WUnited States declaration of war upon ItalyWUnited States declaration of war on JapanWUnited States declaration of war upon MexicoWUnited States declaration of war upon SpainWUnited States declaration of war upon the United Kingdom
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