Final answer:
The First Continental Congress sent the Olive Branch Petition to King George III in 1774 to repeal the Intolerable Acts, but it was rejected, further heightening tensions that led to the American Revolution.
Step-by-step explanation:
The petition to repeal the Intolerable Acts was sent to King George III by the First Continental Congress in the year 1774. This document, known as the Olive Branch Petition, expressed loyalty to the king while detailing colonial grievances and seeking his intervention to prevent further hostility. Despite the Congress's efforts to maintain peace and address the policies that they deemed oppressive, King George III rejected the petition and soon after, the colonies were declared in rebellion, escalating tensions that led to the American Revolutionary War.