Final answer:
Queen Anne followed William as the monarch after his death, leading to the union of Scotland and England parliaments and establishing Great Britain. The Hanoverian dynasty started with George I after Anne's death.
Step-by-step explanation:
After the deaths of William and Mary, Mary's younger sister Anne became the Queen. William, who continued to rule alone after Mary's death in 1694, was succeeded by Anne upon his death in 1702. Queen Anne was the last Stuart ruler, and under her reign, the Act of Union was enacted, which unified the Parliaments of Scotland and England, resulting in the formation of Great Britain. With Anne's passing and no surviving heirs, the throne was inherited by the Electors of Hanover as the nearest Protestant relatives to the Stuarts, bringing George I to the throne and starting the Hanoverian dynasty, continuing with his grandson George III, who was monarch during the American Revolution.