1. What event started World War I?

2. By the end of the War, approximately how many countries participated?

3. What were the names of the 2 powers that fought in the war?

4. The video on the top of the page shows a list of firsts in war. Aside from weapons, what other firsts occurred during World War I?

5. What was the most common style of warfare for WWI?

6. How many casualties were there?

7. What document ended the war?

1. The assassination of Archduke Franz Ferdinand in Sarajevo on 28th June 1914, it triggered a chain of events that resulted in World War 1. After the assassination, Austria-Hungary threatened war on Serbia.

2. idk

3. World War II the chief Allied powers were Great Britain, France (except during the German occupation, 1940–44), the Soviet Union (after its entry in June 1941), the United States (after its entry on December 8, 1941), and China. More generally, the Allies included all the wartime members of the United…

4. idk

5. Trench warfare

Trenches were common throughout the Western Front.

Trench warfare in World War I was employed primarily on the Western Front, an area of northern France and Belgium that saw combat between German troops and Allied forces from France, Great Britain and, later, the United States.

6. 40 million

The total number of military and civilian casualties in World War I is estimated to be about 40 million: estimates range from 20.5 to 22 million deaths and about 20 to 22 million wounded military personnel, ranking it among the deadliest conflicts in human history.

7. The Treaty of Paris, formally ending the war, was not signed until September 3, 1783. The Continental Congress, which was temporarily situated in Annapolis, Maryland, at the time, ratified the Treaty of Paris on January 14, 1784.

Explanation:

HOPE THIS HELPED

1. The assassination of Archduke Franz Ferdinand in Sarajevo on 28th June 1914, it triggered a chain of events that resulted in World War 1. After the assassination, Austria-Hungary threatened war on Serbia.

2. Between 1914 and 1918, more than 100 countries from Africa, the Americas, Asia, Australasia, and Europe were part of the conflict.

3. The main Allied powers were Great Britain, The United States, China, and the Soviet Union. The leaders of the Allies were Franklin Roosevelt (the United States), Winston Churchill (Great Britain), and Joseph Stalin (the Soviet Union)

4. the first major use of toxic gasses, the first war fought on land air and sea, first air attacks on British civilians Etc.

5. Trench Warfare. Trench warfare is a type of fighting where both sides build deep trenches as a defense against the enemy. These trenches can stretch for many miles and make it nearly impossible for one side to advance. During World War I, the western front in France was fought using trench warfare.

6. 40 million

7. the Treaty of Versailles

I hope this helped

the united states didn't wanted to get involve with other countries probelms

i believe the answer is d.