Whom did the United States declare independence from?

The correct response indicates that the United States declared independence from Great Britain. This declaration was formalized on July 4, 1776, with the adoption of the Declaration of Independence. The document was primarily drafted by Thomas Jefferson and articulated the colonies' grievances against King George III and the British Parliament, asserting that the colonies had the right to self-govern and break free from British rule.

The choice of Great Britain is historically significant as it marked the beginning of a new nation and the establishment of principles that would govern democracy and individual rights. This event set the stage for the Revolutionary War, where the American colonies fought to secure their freedom from British control, ultimately leading to the establishment of the United States.

The other options do not reflect events pertinent to the formation of the United States: France, Spain, and Portugal were not the colonial powers from whom the United States sought independence, thus making them irrelevant in this context.