The country of blank had the greatest influence on the spread of nationalism through Europe, because the conquest of blank helped to spread nationalist ideas through the continent

The country of France had the greatest influence on the spread of nationalism through Europe, because the conquest of Napoleon Bonaparte helped to spread nationalist ideas through the continent. Napoleon's conquests and unification of various regions under French rule inspired nationalist movements in other countries, as people began to see the benefits of unity and independence. This, in turn, led to the rise of nationalist movements and the eventual unification of various European countries.