What time period does the show reign take place in?

The show "Reign" is set primarily during the 16th century, focusing on the life of Mary, Queen of Scots, as she navigates the complexities of court politics and her tumultuous reign. The series begins in 1557 and continues through various significant historical events of the time, including Mary's interactions with other prominent figures like Queen Elizabeth I of England. The show blends historical fact with fictional elements for dramatic effect.