Psychology is the correct answer
Napoleon replaced existing Monarchs with members of his own family. His aim was to replace existing empire with one of his, which would have made him and his family rule wholly. Resistance to to French occupation and French puppet rulers was often based on nationalist sentiments, but it's doubtful whether it would have remained a popular cause with the masses after Napoleon's final defeat.
Answer:
Interchangeable parts, popularized in America when Eli Whitney used them to assemble muskets in the first years of the 19th century, allowed relatively unskilled workers to produce large numbers of weapons quickly and at lower cost, and made repair and replacement of parts infinitely easier.
Explanation:
the Eiffel Tower was built to to commemorate the hundred year anniversary of the French Revolution. It was also supposed to be a temporary structure, but due to its odd shape and popularity, they didn't destroy it.
