Everybody wants to jump on this bandwagon and throw in their two cents. Remember: Star Wars took place A long, long time ago in a galaxy far, far away.
Star Wars happened way in the past, not the future, perhaps even before the existence of Earth. Furthermore, it happened in a very distant galaxy, perhaps millions or billions of light years away.
It’s simply a modern miracle that we can watch the story unfold before us on the big screen and your Blu-Ray player! Earth is not mentioned, and if it were, the people of Earth during those days would have been primitive indeed, if even we had evolved into homo-sapiens at that point in time.