A member of the powerful Medici family, Catherine married Henry II in 1533, and together they had 10 children. She became queen when Henry inherited the crown in 1547. Though he largely excluded her from state affairs, she was thrust into the political arena upon his death in 1559. As regent for her young sons, first Francis II and then Charles IX, she determined state policy to a considerable extent. For that reason, she is generally blamed for what massacre carried out under Charles IX’s rule? Discuss