Final answer:
Universalising nationalism is an ideology that emerged during the 19th century in Europe and promotes the idea that all people should live in their own nations governed by their own people.
Step-by-step explanation:
Universalising nationalism is an ideology that emerged during the 19th century in Europe and was influenced by thinkers like Johann Gottfried von Herder and Giuseppe Mazzini. It advocates for a sense of shared national identity that transcends ethnic or cultural boundaries. This ideology promotes the idea that all people should live in their own nations, governed by their own people. It aims to replace conservative monarchies with new republics based on the principles of sovereignty and independence.