the black death by far. wiped out an estimated 60% of Europe not including the famine or climate change
The political followers of Thomas Jefferson took up the name "Democratic-Republicans," preferring this over the previous term "Anti-Federalists" since the Constitution had already be drafted and ratified.
The only shape that fits that definition is the sphere. So, gravity is the answer to why Earth is round! If you've seen pictures of asteroids that exist in outer space, you may have noticed that some of them are irregular, rocky shapes. That's because they're not big enough to pull themselves into a sphere.
They all have their own jobs, and none is more important than another.