Archduke Franz Ferdinand's Assassination

If I had gone back in time to change a historic event it would be changing the assassination of Archduke Franz Ferdinand. As many well know this assassination was significant because it was one of the sparks to the first world war. Without world war one would there be a second one to leave the U.S in terror and a horrid economy? I believe stopping the assassination of the archduke would have brought the war to a whole new level leaving most countries out of the war meaning it would not be an international war lead by dictators and leaders. On Sunday, 28 June 1914, at approximately 10:45 am, Franz Ferdinand and his wife were killed in Sarajevo, the capital of the Austro-Hungarian province of Bosnia and Herzegovina, by Gavrilo Princip, 19 at the time, a member of Young Bosnia and one of a group of assassins organized and armed by the Black Hand. Who was Archduke Franz Ferdinand? He was born in Graz, Austria. In 1875, when he was only eleven years old, his cousin Duke Francis V of Modena died, naming Franz Ferdinand his throne. Franz Ferdinand then

This led to a domino effect and eventually the world was waging wars against each other. Becoming the first World War. But if I were there by time travel to stop the grenade attack the world war might not have been waged or even if it did it would have been fought differently leaving my hometown the U.S alone. But this would make a drastic problem for the U.S because of the economic crisis the country had built. The war brought the U.S out of the Great Depression so without the war the U.S would have economically failed. What would that look like though? Would it look likee a new nation taken over by another, or what else would bring the U.S out of the Great Depression and would those methods still be used today to help with economic problems of today's world? Who