What of Napoleon's achievements influences governments today?

The system of checks and balances ensures that

The holocaust of world war ii resulted in a) the nazis effectively used propaganda to gain and hold power in germany. b) ethnic regimes carried out mass devastation. c) deporting all european jews to the island of madagascar. d) the systematic mass slaughter of european jews and and others in nazi concentration camps during world war ii.

How did the united states obtained the purchase of floridia to extand its frontiers to the pacific ocean