The document summarizes key events leading up to US involvement in World War I. It describes the assassination of Archduke Franz Ferdinand of Austria-Hungary in 1914, setting off a series of political alliances that divided Europe into the Allied and Central Powers. Trench warfare led to stalemate on the Western Front. Though initially neutral, the US entered the war in 1917 after German U-boats sank American merchant ships and the interception of the Zimmerman Telegram, which proposed a German alliance with Mexico against the US.

1. World War I

2. “ The War to End all Wars.”

3. Franz Ferdinand, the heir to the throne of Austria-Hungary Was assassinated-1914

4. ASSASSINATED

5. (Wanted Bosnia to separate from Austria-Hungary) The Black Hand

6. Political Alliances were made… GERMANY+AUSTRIA-HUNGARY

7. Political Alliances were made… GERMANY+AUSTRIA-HUNGARY AUSTRIA-HUNGARY+OTTOMAN EMPIRE THE CENTRAL POWERS

8. RUSSIA+SERBIA FRANCE+GREAT BRITAIN UNITED STATES + NUMEROUS OTHERS THE ALLIED POWERS

9. The Trench System

10. Trenches were a German creation

11. British and French Troops had little choice but to dig in as well

12. The Result? STALEMATE

13. The Trench System

16. The Front-Line Trench 7’ X 6’

17. The Front-Line Trench 7’ X 6’ Parapet topped with sandbags

18. The Front-Line Trench 7’ X 6’ Parapet topped with sandbags Dug at angles

19. The Front-Line Trench 7’ X 6’ Parapet topped with sandbags Dug at angles Faced “No-Man’s Land”

21. The Support Trench 2 nd line of defense

22. The Support Trench 2 nd line of defense Connected to Front-line with Communication Trench

24. The Reserve Trench Last line of defense

25. The Reserve Trench Last line of defense Often connected to nearest town

26. Photo by: desert11sailor @ Flickr.com

27. The Trench System

43. The U.S. goes “ over there”

44. FALSE

45. Why did the US not get involved sooner?

46. Why did the US not get involved sooner? Neutrality & Isolationism

47. Why did the US not get involved sooner? Neutrality & Isolationism Irish wanted revolution!

48. Why did the US not get involved sooner? Neutrality & Isolationism Irish wanted revolution! German-Americans wanted peace

49. The Lusitania German officials warned US not to sail on British ships

50. The Lusitania German U-Boats torpedoed the British ship…

51. 128 DEAD AMERICANS

52. What caused the US to get involved?

53. What caused the US to get involved? The Lusitania (not major cause)

54. What caused the US to get involved? The Lusitania (not major cause) 1917-Germans began U-Boat attacks against all merchant ships

55. What caused the US to get involved? The Lusitania (not major cause) 1917-Germans began U-Boat attacks against all merchant ships INCLUDING US SHIPS

56. What caused the US to get involved?

57. What caused the US to get involved? The Zimmerman Telegram discovered

58. What caused the US to get involved? The Zimmerman Telegram discovered German plot to start a war between US & Mexico =

59. What caused the US to get involved? Germans attacked US ships The Zimmerman Telegram discovered German plot to start a war between US & Mexico =

60. DURING PEACE TIME Industry Banking Commerce

61. DURING WAR Industry Banking Commerce

62. POST-WAR EUROPE Russia Great Britain Serbia France US?

63. THE STAGE IS SET...

64. WWII