Anyway, here goes:
A city wanted trade routes. But the others didn't. And here's what happened from the beginning to the end. A war started. It was even at first. Then it got odd. With a great dragon war. Zapping every building with windows. The black laser finished turning every everything alive into dust.
I'm not sure that double "every" was on purpose. It was across lines.
Teacher's comment: "Yikers! I hope it turns out well in the end."