6. Alliance in World War I
The United States and the United Kingdom formed a significant military alliance during World War I, marking a pivotal shift in their relationship. The U.S. entry into the war in 1917 provided crucial support to the Allies, bolstering their efforts on the Western Front. This partnership proved decisive in countering the Central Powers and contributed to the eventual Allied victory. For more details, see National WWI Museum: WWI and Great Britain.
