Who join the allies in 1917?

In 1917, the United States joined the Allies in World War I, providing significant military and economic support. This entry was prompted by various factors, including unrestricted submarine warfare by Germany and the Zimmermann Telegram, which proposed a military alliance between Germany and Mexico against the U.S. Additionally, several other nations, including Brazil and Greece, also aligned with the Allies during this period. The U.S. involvement marked a turning point in the war, contributing to the eventual defeat of the Central Powers.