A more thorough explanation:

Definition: External sovereignty refers to a nation's power to deal with other national governments on its behalf.

Explanation: External sovereignty is the ability of a country to conduct its own foreign affairs and make decisions about its relationships with other countries. This includes negotiating treaties, making alliances, and engaging in diplomacy. It is an important aspect of a country's independence and autonomy.

Example: The United States has external sovereignty because it can negotiate trade agreements with other countries, participate in international organizations like the United Nations, and make decisions about its military alliances. This means that the U.S. government has the power to represent the country on the global stage and make decisions that affect its relationships with other nations.