Explaining what factors contributed to the rise of nationalism in the 1810s?

The factors which contributed to the rise of nationalism in the 1810s were the general zeitgeist of the people who considered that the ethnic groups of Europe should live in their own countries and not in huge empires where their particular ethnic group wasn't represented. Another thing was that with the advent of the industralist revolution, there were more and more people coming from low-paying countries to take over the jobs of people from certain countries - which increased nationalism.