A "Sovereign" refers to a supreme ruler or authority, often a king or queen, who holds ultimate power over a state or territory. This individual is responsible for making important decisions, enforcing laws, and representing the nation in diplomatic matters. In modern contexts, the term can also apply to a government or state that operates independently and is not subject to external control. In addition to its political meaning, "sovereign" can describe a type of currency, such as the British sovereign, which is a gold coin historically used in England. The concept of sovereignty is crucial in international relations, as it emphasizes the rights of nations to govern themselves without interference from others.