It was significant because at the
time we were divide between a strong national government or a nation of states whom ran themselves
It would be total chaos!! No one in a civilised society can be be “judge and jury”. There has to be a separate system for each .
Whatchu mean? If you mean Slavery increased the economy and caused the Civil War, it's true.
They created the number system and discovered that the earth was round by studying eclipses.
Hope this helps.