Treason is a serious crime that involves betraying one's country. This can happen in various ways, such as spying for a foreign nation or attempting to overthrow the government. When someone commits treason, they are seen as putting their own interests above the safety and well-being of their fellow citizens.
In many countries, including the United States, treason is one of the few crimes defined in the constitution. The penalties for treason can be severe, often including long prison sentences or even the death penalty. This reflects how important loyalty to one's country is considered in maintaining national security.