Which of the Following Was an Unforeseen Consequence of the Napoleonic

Which of the following was an unforeseen consequence of the Napoleonic Wars?

A) They ensured that the superpowers would adhere to eighteenth-century "balance of power" politics.
B) They put an end to the development of national independence movements over the following decades.
C) They showed how more modernized warfare could be more humane because they resulted in a small number of casualties.
D) They confirmed that Russia would take France and Great Britain's place as the great power of the Continent in the nineteenth century.
E) They showed that in years to come, peace would rely on a formal system of close cooperation among the powerful countries.