The formation of business monopolies in the late 1800s was made possible by the A. Elimination of the free enterprise system
B. Effects of Laissez-faire policies
C. Passage of federal antitrust laws
D. Adoption of socialist economic practices

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. 

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d gerrymandering is the correct answer