When was the corporation UNITED STATES, incorporated in great Britain

The corporation known as the "United States" is not incorporated in the traditional sense, as it is a sovereign nation rather than a corporation. The term "United States" refers to the collective group of states that formed a federal government after declaring independence from Great Britain in 1776. The Articles of Confederation were adopted in 1781, and the current Constitution was ratified in 1788, coming into effect in 1789. If you are referring to the legal concept of the "United States" as a corporation in a different context, such as discussions about corporate personhood or specific entities related to U.S. law, please provide more details for clarification.