Cause: Allied propaganda emphasized the invasion of neutral Belgium and included horror stories of German atrocities.
Effect: G. A new wave of anti-German feeling was generated as the United States moved closer to war.
Cause: The British blockade effectively barred American ships from reaching German ports.
Effect: E. American trade with the Allies soared.
Cause: Germany remained determined to cut off supplies to Great Britain.
Effect: H. More Americans were influenced to support the Allied cause.
Cause: President Woodrow Wilson threatened to end diplomatic relations with Germany when a U-boat torpedoed an unarmed French passenger ship and several Americans were injured.
Effect: C. A German U-boat sank the Lusitania on May 7, 1915, and the Sussex several months later.
Cause: Newspapers published a secret telegram sent by German foreign minister, Arthur Zimmerman, to Mexico.
Effect: A. Wilson asked Congress for a declaration of war against Germany.
Cause: The Russian people revolted and overthrew the monarchy. The new Russian government vowed to defeat Germany.
Effect: H. More Americans were influenced to support the Allied cause.
Cause: Germans attacked and sank four American ships.
Effect: A. Wilson asked Congress for a declaration of war against Germany.
Cause: The United States had to raise an army as quickly as possible.
Effect: F. Congress passed the Selective Service Act, establishing a military draft.