insurrection of the lower classes of Florence that brought power to one of the most democratic governments in history.
C to move eastern Indian tribes to lands west of Mississippi
Answer:
Inventions like the airplane and machine gun
Explanation:
World War I was so deadly because all of the new weapons that were invented. New technology that was being invented such as machine guns and mustard gas made war deadlier than every war before.
I'm not so sure it might be 8 groups I think pretty sure it's 8