In the 17th and 18th centuries, Enlightenment philosophers preached that people had the ability to reason and did not need the guidance of a monarch. A new concept began to develop when people of common backgrounds or belief systems united with the goal of creating a perfect government. What is the name for the group pride that was birthed from Enlightenment reasoning?
Nationalism. in grade 10 history you should have learned about Nationalism, Militarism, Imperialism, and alliances. those were the main causes of WWI and nationalism is your answer. :)