Greece
They gave us the idea of Democracy. There democracy was called Direct, Athenian, or Pure. Ours is called Representative. Without democracy, we'd be living a life that wouldn't be free, without democracy, the world would fall apart. Education like geometry, life science, philosophy ect. They're people like Aristotle. Without education, we would have never landed on the moon. Their inventions might be simple, like the Astrolabe, the Shower, the Alarm clock. The idea of inventions inspired us to invent more and more useful... and sometimes useless ideas.