Choose all that led to the United States joining the Allies during World War I D The Zimmerman Note/Telegram from Germany encouraging Mexico to start a war with the United The sinking of Lusitania by German submarines the alliances they had to France and Great Britain the alliances they had to Germany and Austria-Hungary

## Step 1<br />The United States joined the Allies during World War I due to several reasons. The first reason was the Zimmerman Note/Telegram from Germany encouraging Mexico to start a war with the United States. This was a direct threat to the United States, which led to the U.S. joining the war.<br /><br />## Step 2<br />The second reason was the sinking of Lusitania by German submarines. This was a direct act of aggression against the United States, which led to the U.S. joining the war.<br /><br />## Step 3<br />The third reason was the alliances the United States had to France and Great Britain. These alliances were part of the U.S.'s commitment to the Allies, which led to the U.S. joining the war.<br /><br />## Step 4<br />The fourth reason was the alliances the United States had to Germany and Austria-Hungary. However, these alliances did not lead to the U.S. joining the Allies. Instead, they were part of the U.S.'s initial neutrality in the war.