At the start of World War II in 1939 it was limited to just a European war, with the British & French calling it a "phoney war". It wasn't until the wars of Asia & Europe joined up it was then classed as a world war In context, World War II was a "World War" because of all of the country's that were involved ranging from Canada too Australia. The reason people jumped in was because tler commanded the Wehrmacht (Ver-ma-kht) and the rest of his armies to be his henchmen to 1.
Rule the world, 2. Kill all Jews (which is unknown why he tried) and 3. He broke the Treaty of Versailles.
After that it just took off.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.