~The World~

So why is the earth round and not square like most everyone thought before Columbus? I mean the world could be square, because of the atmosphere and gravity we could live on the sides. But if you sailed or kept going you would fall of the earth when you hit the end of one side. But an airplane could easily be launched into space, just fly it off the corner of the earth. But yet another down would be that you wouldn't be able to visit any other side unless you launched into space and landed on the other side of the world.

the rotation of the earth would also be completely screwed up and the sun would only reach a few edges and one really bright, while the others are very dim. So it is very logical that the earth is round. So we can visit all the other countries easily and so life is a bit more smooth.