Answer:
The real and main reason was The Assassination of Archduke Francisco Ferdinand heir to the throne of Austria-Hungary in his visit in Bosnia. The Hero Gavrilo Princep killed him because he want his country to have independence.
There are also reasons like Imperialism, Nationalism, Militarism and many otherd
The Treaty Of Versailles placed restrictions on how strong Germany could build its military and took away large portions of land that were taken during WW1. Loosing Lot of land right after obtaining it would make many citizens rather upset.
It was electricity that was being invented causing the extended number of hours in a day permitting Americans to work and even play. Electricity powers companies, industries, manufacturing plants down to the most basic unit, the homes, schools, appliances, gadgets and the likes. It was said that electricity has been invented by an American inventor named as Thomas Alba Edison however, there are a lot of arguments saying that it was not Edison who first discovered electricity. The electricity has become a vital part of the lives and business of all the people in the world.
On August 3, 1492, Columbus set sail from Spain to find an all-water route to Asia. On October 12, more than two months later, Columbus landed on an island in the Bahamas that he called San Salvador; the natives called it Guanahani.
Yes that is somewhat true i think