Which treaty officially ended World War I?

The Treaty of Versailles is the official agreement that marked the end of World War I, signed on June 28, 1919. This treaty held great significance as it outlined the terms of peace and placed various restrictions on Germany, which was seen as the primary aggressor in the war. The Treaty of Versailles not only had political implications by redrawing borders and establishing new nations, but it also aimed to prevent future conflicts through the establishment of the League of Nations, although the U.S. did not ultimately join the League.

In contrast, the Treaty of Paris mainly pertains to other historical contexts, like the Treaty of Paris (1783) that ended the American Revolutionary War, and is not related to World War I. The Treaty of Ghent concluded the War of 1812 between the United States and Great Britain and is not relevant here either. Lastly, the Treaty of Trianon, signed in 1920, dealt with Hungary after World War I and was not the treaty that officially ended the global conflict of the war. Thus, the Treaty of Versailles stands as the correct answer regarding the conclusion of World War I.