Question

what event led to the siege of Yorktown

Answer 1

1) British occupation of Yorktown AND THEN authorization to end the war at Yorktown
and then the British bombardment of Yorktown all i can say
2)The Declaration of Independence was a statement adopted by the Continental Congress on July 4, 1776, which announced that the thirteen American colonies, then at war with Great Britain, regarded themselves as independent states, and no longer a part of the British Empire.