Final answer:
The Channel Islands, including Jersey and Guernsey, are Crown dependencies owned by the United Kingdom and possess self-governing autonomy.
Step-by-step explanation:
The Channel Islands, which include Jersey and Guernsey, are owned by the United Kingdom, more specifically, they are the Crown dependencies of the British Crown.
These islands are not part of the United Kingdom itself but are self-governing possessions of the Crown. While they rely on the UK for their defense and international relations, they have their own independent administrative, economic, and legal systems. Jersey and Guernsey have their respective governmental and legal systems and enjoy a high degree of autonomy.