How did the napoleonic wars of the 19th cetury affect europe

The Napoleonic wars affected the development of industry in Europe by halting trade and communication, as well as disrupting the economy because most energy was redirected to war.

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They came together to unify Europe

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The second , larger puritan colony of massachusetts bay was conceived as a "city upon a hill". but it also struggled with internal turmoil like the salem witch trials and external conflicts like king philip's (metacom's) war.