Final answer:
Thomas Paine's 'Common Sense' labeled the British monarchy's rule over the American colonies as tyranny and called for the establishment of a more equitable form of government.
Step-by-step explanation:
The pamphlet Common Sense by Thomas Paine called the form of government under the British monarchy tyranny. In his work, Paine criticized the concept of hereditary monarchy and the actions of the British government, highlighting the injustices and the despotism of King George III over the American colonies. He made a compelling argument that when a government becomes destructive to the rights of the people, it is not only the right but the duty of the people to overthrow such government and establish a new one based on principles that ensure their safety and happiness. Paine's writings played a significant role in influencing American colonists to seek independence and adopt a republic form of government.