After World War I, the United States was tasked with ratifying the Treaty of Versailles. A treaty is "an agreement to certain terms between two or more nations." One aspect of this treaty included joining the League of Nations, an organization created to attempt to maintain world peace. The U.S. Senate debated this treaty, and opposition was vocalized by one particular Massachusetts senator, Henry Cabot Lodge Sr., and his fellow Republicans. Ultimately, the process was bogged down with debate, and the treaty was never ratified.

After World War I, all countries involved were deeply affected by massive losses. Never had a war so profoundly impacted the world. The death of 40 million people was difficult to contend with. Many tried and struggled to find meaning in the loss. Some suggested organizing so that a conflict on this scale could never happen again. U.S. President Woodrow Wilson suggested the creation of the League of Nations. This organization invited countries around the world to work together to achieve global peace. When disagreements occurred, Wilson suggested that the organization could provide a forum for settling disputes between countries to avoid war.

The question of joining the League of Nations arose as the U.S. Senate debated ratification of the Treaty of Versailles. This was the proposed peace treaty after World War I, and it included a provision that gave countries the option to join the League of Nations. The Senate debated the merits of the treaty and the League of Nations but ultimately did not ratify the treaty or join the organization.

How could the U.S. elect not to join the organization that was its president's idea? Understanding this decision requires the 21st century skill of thinking creatively. Thinking creatively requires us to synthesize, or combine, information about Congress’s decision to not ratify the treaty with the opposition of one particular senator, Henry Cabot Lodge Sr., to understand this event.

Woodrow Wilson was a Democrat, and the Republican leader of the Senate was Henry Cabot Lodge Sr. Lodge. He and his fellow Republicans were concerned about the treaty, especially Article X, which required every member of the League of Nations to respect the territory of other nations. Lodge was concerned that the U.S. would be forced to act against countries that did not respect this provision. It might have to enact embargoes or break diplomatic ties with countries due to this, even when it was not beneficial to the United States. Republicans did not like the idea that the U.S. would be limited in its power to make its own choices regarding its diplomatic relationships. They did not wish to be subject to the power of a supranational organization.

However, Republicans recognized the need for international cooperation to prevent future conflicts. Lodge attached amendments to the treaty, arguing that U.S. membership in the League of Nations and ratification of the peace treaty should not be tied together. The U.S. should be able to ratify the treaty without joining the organization. However, Wilson was adamant that joining the League of Nations was necessary and refused to compromise. He asked Senate Democrats to refuse to pass the treaty unless Lodge’s amendments were removed.

Republicans and Democrats were unable to compromise, leading to the death of the treaty in the U.S. The U.S. had a role, along with other countries that were involved in the war, in drafting the treaty. However, the U.S. never signed the Treaty of Versailles or joined the League of Nations, though over 30 other countries did.

A historical page is titled Origin of the League of Nations. A portrait of Woodrow Wilson is centered below the title.
The photo shows Woodrow Wilson and the League of Nations Commission representatives at the Paris Peace Conference.
Source: Library of Congress, League of Nations Archives

On either side of Wilson’s portrait are listed several key events, from the Fourteen Points laid down by President Wilson as the basis of world peace in year 1918, to the first meeting of the General Assembly at Geneva in year 1920. The Fourteenth Point reads as follows: A General Association of Nations must be formed under specific covenants for the purpose of affording mutual guarantees of political independence and territorial integrity to great and small States alike. A dated photograph at the bottom of the page shows two rows of men dressed in suits, in a formal room, with the caption League of Nations Commission of the Peace Conference. The names of the men seated and standing from left to right are listed below.

By not joining the League of Nations, the U.S. remained mostly uninvolved in European affairs. In the coming two decades, a growing sense of American isolationism blossomed. The U.S. focused on its own affairs and economic growth and stayed out of Europe. However, when another conflict inevitably broke out, World War II, the U.S. was first drawn in economically by giving aid to the Allies. Then after the Japanese attack on Pearl Harbor, the U.S. officially became a part of the conflict.

Historians often discuss alternative histories, or what could possibly have happened if events transpired differently. This requires creative thinking; however, it is important to remember that these are just theories and often lack concrete evidence to support them. Many ask the question, what if the U.S. had signed the Treaty of Versailles and joined the League of Nations? Generally, two main perspectives are held on what may have occurred.

Many historians argue that it would have had little impact. The U.S. would have been one of 33 states to join. Leading up to World War II, the League of Nations took few steps to intervene as Japan, Italy, and Germany expanded their empires. This ultimately resulted in war. It is likely that the U.S. would have also refused to intervene, hoping to avoid another costly conflict.

A less popular theory argues it may have had an impact on the length of World War II. As a part of the League of Nations, the U.S. may have joined the war effort two years earlier than it did. It might have been able to aid in defeating Germany quicker, shortening the war by a few years. Remember, these are just theories. There is no way to know for certain what may have occurred if the U.S. had joined the League of Nations.

With that info answer this question,
Which of the following statements best synthesizes Henry Cabot Lodge Sr.’s opposition to the Treaty of Versailles and the United States’ commitment to the League of Nations?(1 point)
Responses

Senator Lodge’s opposition to the treaty was unsuccessful since Congress supported the president’s ideas.

The U.S. did not join the League of Nations after Senator Lodge convinced President Wilson it would be harmful.

Senator Lodge’s opposition was not impactful enough to prevent the U.S. from joining the League of Nations.

The United States Congress could not commit to the League of Nations due to Senator Lodge’s opposition.

The answer is: Senator Lodge’s opposition was not impactful enough to prevent the U.S. from joining the League of Nations.

The statement that best synthesizes Henry Cabot Lodge Sr.'s opposition to the Treaty of Versailles and the United States' commitment to the League of Nations is: Senator Lodge’s opposition was not impactful enough to prevent the U.S. from joining the League of Nations.

The statement that best synthesizes Henry Cabot Lodge Sr.’s opposition to the Treaty of Versailles and the United States’ commitment to the League of Nations is: "Senator Lodge’s opposition was not impactful enough to prevent the U.S. from joining the League of Nations."

While Lodge and his fellow Republicans voiced their concerns and opposition to the treaty, they were unable to prevent the U.S. from joining the League of Nations. Ultimately, the opposition was not strong enough to sway Congress or prevent the U.S. from becoming a member of the organization.