Final answer:
The Boston Tea Party led to the Declaration of Independence, the key event and document signaling the American colonies' assertion of independence from British rule.
Step-by-step explanation:
The event that leads to the accompanying amendment is described in the pair 'The Boston Tea Party - The Declaration of Independence'. The Boston Tea Party was a direct protest against the Tea Act imposed by the British Parliament, which increased the tensions between the American colonies and Britain. This event was one of the key occurrences that escalated the American Revolution and led the Second Continental Congress to approve the Declaration of Independence in 1776, signaling the formal assertion of independence from British rule.