I need more information on how World War 1 started. How did it start and what countries were directly involved in starting the war?
I need more information on how World War 1 started. How did it start and what countries were directly involved in starting the war?
user
I think you mean World War I, or World War 1.  I can tell you this:
assistant
Okay. What was the specific event or battle that started World War I?
user
Some historians mark the beginning of World War 1 as the assassination of the Austrian Archduke Franz Ferdinand in 1914.  This was an event that triggered many long-standing conflicts between the major European powers, and eventually escalated to full-scale war.  The two largest conflicts, and the most lethal, were the German–Austrian–Hungarian and the French–German–Austrian–Bulgarian conflicts, and the latter was probably the major cause of the war.
assistant
What were some of the other countries that ended up being involved in the war?
user
During the war, almost every country on the globe had people fighting in World War 1, either with their own national armies or with troops that had been recruited from their colonies.   As many as seventy-six countries were involved in the war, although the total number of countries was actually much higher than that, due to the massive amount of colonies that each country had.  Countries in Africa, Asia, Australia, and the Americas ended up fighting as part of one of the major powers.  Here is a complete list of countries that fought in World War 1:
assistant
Thank you. At what point did the United States become involved in World War I?
user
The United States declared war on Germany in 1917, after Germany declared war on the United States.  This happened after Germany sent a number of U-Boats across the Atlantic Ocean to attack American shipping and destroy American ships.  The United States had previously declared war on Austria-Hungary in December 1917.
assistant
Why did the United State declare war on Austria-Hungary?
user