The Monroe Doctrine introduced on December 2, 2023 is an example of Nationalism from the 1800s because it showed that the U.S. cared more about their country and tried to stay away from conflict with other countries trying to take their land.
Nationalism refers to the idea or doctrine that states a nation has the right to establish an independence from other countries and institute an independent political system based on that countries history and common beliefs.
The Monroe Doctrine states that any further actions from European countries in interfering with states or efforts to colonize land in the Americas would be seen as act of aggression.
The doctrine further stated that the United States would not interfere with existing European countries or meddle with their internal issues, and also stated that the Western Hemisphere was no longer open for colonization.
Nationalism was prevalent during World War I because countries had a heightened sense of self pride in their government and strength.
Learn more about nationalism, imperialism, and WWI at Iun.edu.