What do you mean by "this"? Do you mean heliocentric model, that is, with Sun at the center and all the planets (including the Earth) surrounding it and circling around it?
Then the correct answer is:
Nicolas Copernicus, a Polish Astronomer
The answer would likely be millet and meat because all kinds of meat were expensive at this kind of time.
The highest point above sea level is an elevation. The difference between the highest and lowest point in an area is a relief.
I'm gonna have tuh say letter C..