American colonists rejected the Stamp Act of 1765 brought in by British Prime Minister George Grenville, and initiated boycotts of British goods which helped bring about the repeal of the Act in 1766. The passage of the Townshend Acts in 1767 and 1768 again led to colonial protests, including a renewed boycott movement against British wares. Most of the taxes in the Townshend Acts were repealed in 1770 by the Ministry of Lord North. The passage of the Tea Act in May 1773, which enforced the remaining taxes on tea, led to the Boston Tea Party on December 16, 1773. The Parliament considered this an illegal act because they believed it undermined the authority of the Crown-in-Parliament. When the British then used the military to enforce laws that the colonists believed Parliament had passed illegally, the colonists responded by forming militias and seized political control of each colony, ousting the royal governors – with the exception of the American-born Royal Governor of Connecticut, John Trumbull, who was allowed to remain as the new Patriot Governor.