The country of had the greatest influence on the spread of the neck nationalism throughout Europe, because the conquest of how to spread nationalize idea throughout the continent
is largely attributed to Napoleon Bonaparte and the French Revolution.
During his reign, Napoleon implemented a number of policies aimed at promoting French nationalism and forging a united, centralised state. He reformed legal and educational systems, emphasised the importance of the French language and promoted the ideals of the Revolution throughout Europe. This helped to propagate a sense of national identity and pride in other European countries, which had previously been divided along regional or ethnic lines.
The French Revolution also had a profound impact on the development of nationalism in Europe. It promoted the idea of popular sovereignty, whereby the people, rather than monarchs or aristocrats, were the ultimate source of power. This idea gained traction throughout Europe and inspired many nationalist movements and uprisings in other countries.
Furthermore, the spread of French culture, language and ideas throughout Europe during the 19th century helped to further stoke nationalist sentiments. French culture and language were considered avant-garde, and many European intellectuals looked to France as a model of modernity and progress.
Overall, France played a significant role in the spread of nationalism throughout Europe, both through its conquests and through the influence of the French Revolution and French culture.