WWI~ a Connection Across Time

Because everything in history has some sort of impact on people and the world today, many people study history so they can learn to not make the same mistakes. The biggest mistake of WWI was, in my opinion, the Treaty of Versailles. From that, it can learned that a peace treaty to end a dispute should always involve everyone it addresses, no matter what. If WWI had never happened, Hitler would probably never have gained power of Germany, and thusly WWII would never have happened.
I think one big thing we can relate from the war to today is oppression. For example, a person with lack of education could think that it's okay to kill someone for a cause, and that sets off bigger chains of events. WWI started with one assassination. USA sent military forces into the extremely poor country Afghanistan. People take advantage of the less fortunate. The world has been hoping that the least educated and most oppressed people on the planet will be able to stop the extremism that is controlling their countries, but history shows that this is not very likely to happen anytime soon.