Without being able to see the cartoon, I can't determine which event is best described by it. However, I can provide a brief description of each option to help you decide:
A. Monroe Doctrine: This principle asserted that any European intervention in the Americas would be seen as an act of aggression, justifying U.S. intervention in the region.
B. Zimmerman Telegram: This was a secret diplomatic communication from Germany to Mexico during World War I, proposing a military alliance against the United States, which angered the U.S. and contributed to its entry into the war.
C. Good Neighbor Policy: Introduced by Franklin D. Roosevelt in the 1930s, this policy focused on promoting better relations with Latin America, emphasizing cooperation and trade rather than military intervention.
D. Sinking of the Lusitania: The British ocean liner Lusitania was sunk by a German U-boat in 1915, killing many civilians, which stirred public opinion against Germany and contributed to the U.S. entering World War I.
If you can describe the cartoon, I may be able to help narrow it down further!