Final answer:
The Royal and Parliamentary Titles Act, stemming from the Acts of Union under Queen Anne, established the name of the nation as 'Great Britain' following the unification of England and Scotland. This renaming reflected significant constitutional changes during the period.
Step-by-step explanation:
The Royal and Parliamentary Titles Act was a law passed after the Glorious Revolution, which signifies important changes in the way the monarchy of England (later Great Britain) was subsequently recognized. While the Royal and Parliamentary Titles Act itself is not directly mentioned in the historical texts provided, its conception aligns with the period when reigning powers and legislative procedures were being reshaped, particularly during the reign of William and Mary as joint monarchs and the subsequent rule under Queen Anne. It follows the Acts of Union in the early 18th century under Queen Anne, through which the Parliaments of Scotland and England were unified and the political entity subsequently known as Great Britain was established. This Act essentially renamed the kingdom and established the name of the nation post the unification of England and Scotland.