Williams 1Mary Elizabeth WilliamsMr. SpethWestern Civilization 2August 30, 2017Assignment 31.How did each of the following contribute to the creation of imperialism during the 19thCentury: Opium Wars? Leopold II? Congress of Berlin (1884)?2.What was the Monroe Doctrine? How did the United States use the Spanish American War as an opportunity to expand its influence in the world?3.How was the European balance of power affected by the Crimean War (1854) and the Franco-Prussian War (1870)?