Who was the British monarch during the American Revolutionary War?

The correct choice is the monarch who ruled during the period when the American colonies sought independence, which was King George III. His reign lasted from 1760 to 1820, encompassing the time of the American Revolutionary War, which officially lasted from 1775 to 1783. King George III's policies and taxation without representation were significant factors that fueled the colonists' dissatisfaction and ultimately led to the revolution. His insistence on maintaining control over the colonies and enforcing British laws was met with resistance, forming the backdrop for the conflict that sought to establish American independence.

The other figures listed did not rule during this pivotal moment in American history. King Henry VIII and Queen Elizabeth I ruled much earlier, while King Charles I's reign ended before the colonies began their struggles for independence, making him irrelevant to the context of the Revolutionary War.