All of the Following Are True About the Napoleonic Era

All of the following are true about the Napoleonic Era except:

A) Napoleon surpassed all previous European rulers in imposing political unity on the European continent.
B) Europe was transformed not only through resistance to Napoleon but through collaboration in his reforms.
C) the fighting during the period amounted to a world war involving not only Europe but America.
D) England, Prussia, Austria, and Russia allied against Napoleon from 1799 onward and resisted defeat by the French until 1812.