I wanted to make sure that this is correct. Please give me your input. Thanks a lot!!

The countries involved in World War I was Russia, France, Italy, and Britain, Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria. I think Mexico was also but not sure.

Germany’s actions were causing the U.S. to become aggravated and disturbed. Two main factors that led the U.S. to be involved in the war were discovering the alliance between Mexico and Germany. (Why did the U.S. become angry?)Between February 3 and March 21 German-boats sank six American merchant ships without warning. In April 2, 1917 declared war on Germany

How did the U.S enter the war?

The United States entered World War I primarily due to Germany's actions that caused them to become aggravated and disturbed. Two main factors led to their involvement in the war. The first factor was the discovery of an alliance between Mexico and Germany. The second factor was the sinking of American merchant ships by German boats without warning.

To verify this information and get a comprehensive answer, one can conduct research using credible sources such as history books, scholarly articles, or reputable websites. These sources will provide detailed accounts of the events that led to the United States' entry into World War I. Some suggested steps to follow include:

1. Start by searching for books about World War I or the United States' involvement in the war. Look for well-known historians or authors who have expertise in this field.
2. Check for scholarly articles in academic journals that focus on the history of World War I or specifically discuss the United States' entry into the war. These articles should provide sources and references to support their claims.
3. Visit reputable websites that provide historical information and analysis, such as official government archives or educational institutions' websites. Look for articles or sections dedicated to World War I and the United States' role in it.
4. Cross-reference the information found in different sources to ensure accuracy and reliability. It is always good practice to consult multiple sources and compare their perspectives and evidence.
5. If in doubt, consult with experts in the field such as history professors, historians, or researchers who have studied World War I extensively. They can provide valuable insights and clarify any uncertainties or conflicting information.