Our modern international system is based on the principle of sovereignty, where countries have nearly complete control over what goes on in their own borders and where they respect the border of other countries.

But this wasn’t always the case. Countries, as we know them, have only existed for a several hundred years. Before that, other political systems like Feudalism were dominant. But that all changed after a particularly bloody conflict: the 30 Years’ War.

To learn more about other historical events that shaped modern life, visit the latest unit of World101 here:
https://world101.cfr.org/historical-c...

Subscribe to our channel for more videos that cover the issues, trends, and concepts you need to know to navigate our complicated world: https://www.youtube.com/world101_cfr?...

CFR Education is an initiative within the Council on Foreign Relations that aims to make complex foreign policy and international issues accessible for high school and college students through its teaching and learning resources.

Visit our website: https://education.cfr.org/

Follow us on social media:
Facebook:   / cfr_education  
Twitter:   / cfr_education  

#teaching #war #moderncountry #conflict