Why were the Khmer Rouge unable to gain power and support during Sihanouk reign? Why does Sihanouk eventually tie himself to the Khmer Rouge?

But this only further unsettled his country and led to a coup that ousted him the next year. Convinced that the United States had been behind the overthrow, King Sihanouk allied himself with the Khmer Rouge at the urging of his Chinese patrons, giving the Cambodian Communists his prestige and enormous popularity.

the right answer for the question that is being asked and shown above is that: "their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.  " the  participant in european imperialism is being described below is that  their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.