What is government attempting to protect with civil rights laws?

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. 

d. william mckinley's southern upbringing him win.

a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.