Complex sentence: The modification of the William and Mary Charter enabled the governor the power to suspend the House of Representatives, ability of the House of Representatives to decide on their speaker, subject to the governor's approval, and to adjourn for no more than two days.
Split into simpler sentences: The modification of the William and Mary charter granted the governor the power to suspend the House of Representatives. It also clarified that the House of Representatives was allowed to choose its own speaker, subject to the governor's approval, and that it was allowed to adjourn for no more than two days.