The American Civil War & the Monroe Doctrine:

A Case Study of International Diplomacy

By Alexander Santana

When people think about the American Civil War, they focus primarily on the battles and the iconic personalities of the Union and the Confederacy. My paper focuses on a less-focused aspect of the war: the French Intervention in Mexico and how this directly threatened United States’ longstanding policy concerning European involvement in the Western Hemisphere known as the Monroe Doctrine. My paper uses a variety of primary and secondary sources to present how both the North and the South reacted to the French overthrow of Mexico’s democratically elected government in the early 1860s in favor of a friendly regime led by Maximillian I of Austria. I discuss the motivations and viewpoints of leaders on both sides of the Civil War including U.S. President Abraham Lincoln, U.S. Secretary of State William Seward, Confederate President Jefferson Davis, and several others. I describe in detail Lincoln’s pragmatic approach to averting direct war with France as well as how Davis and the Confederacy viewed France’s presence in Latin America as an opportunity to gain diplomatic recognition and an important ally in their quest for permanent secession from the Union. My paper seeks to present the French in Mexico and their threat to the Monroe Doctrine in a larger historical context. I explain the significance of this event occurring during the Civil War and how critical this event was in the history of U.S.-Europe relations. The French Intervention in Mexico left a permanent mark on the development of the Monroe Doctrine and the battle between imperialism and democracy in the Western Hemisphere.