Sentence:  Proper ritual observance at any level of society was capable of generating power for use in the spirit world ; but naturally , the royal ritual , which provided unusual control over already supremely powerful divine spirits , was held responsible for <WSD>regulating</WSD> the universe and insuring the welfare of the kingdom . 
Meaning of the word marked with <WSD> tags:  fix or adjust the time, amount, degree, or rate of