WATER!!! is part of all the answers, just its behavior tells me the Earth is a level surface. All liquid water ( except for waters that are move by forces of nature, like rivers, sea shore, the oceans, etc. ) behaves more stable at horizontal angle, when is at vertical angle, it goes always down, ( i.e. rain, waterfalls, etc.). What I try to say is that water in its liquid form cannot stay stable vertically, ( i.e. in a wall ) like it behaves horizontally. Ice could be stuck to a wall, but liquid water only could be like that if is encapsulated or trap in the wall. Therefore, Earth is only in the bottom center, and is surrounded by the Antarctica, then it could spread the rest of the land all around it in a concave form ( the rest of the world ). Yeah some Copernicans can come and say: electrostatic, or electromagnetic field, or magnetism from the center of the Earth make the waters hold together in an almost perfect sphere, but there is a problem, actually a couple if not many problems to those theories. You see, there's this issue that the Earth is spinning at a 1,000 mph, but hey they will jump with things like: but wait!! the magnitude of the size of the BALL will not make you feel the speed, or if you are on a vehicle at a 100 or even at a 200 + mph inside of it you can't feel the speed. Then I will say: 1st a 100 or even a 200 + mph are not 1,000 mph. Second, if you are outside of that vehicle at that speed you will feel the pressure of that in a blink ( and we are talking about 1,000 mph, BTW ), 3rd If we are on a surface of such ball spinning at a 1,000 mph, then either we will be spit out the surface of the ball along time ago, life will be impossible, or the "gravity" or whatever the force will be greater not only to withstand a spinning ball at a 1,000 mph, but also to hold all the oceans, continents, and all that is on top of it, from buildings, boats, cars, people to the rest of it. Taking all that in consideration, everything would be so glued to the surface, life as we know it would be impossible too. But let's say the ball is so big that 1,000 mph doesn't feel because of the revolutions of such are over imposed by Earth's rotundity, ( which I doubt that would be the case, if the Earth is 25,000 miles of circumference ), then is the issue that we are traveling around the Sun at 67,000 mph. You will have the audacity to lecture me? A common Joe. That Earth's gravity will take care of that too? And that we not feel that 67,000 mph trajectory around the Sun? Of course not, but not because whatever ridiculous Copernican + theory of explanation, any of you Copernicans might bring. Is because we are not moving at all, because we are not going around the Sun at 67,000 mph., and because Earth is a level, surface. Oh and another thing, solid objects react to electrostatic different than liquid water. That's not science, is fact. But hey, do not come at me trying to ridicule me with questions and technicality from scholars or PhD's, when you know I would not be able to answer it, or trying to disproof what I say with your geniuses, because that will not change the fact that perception will always prevail over any system or equation or theory created by fools!!!