How did northerners attempt to ease the concerns of southerners over slavery? passing legislation lowering tariffs increasing southern congressional representation overlooking the slavery issue

Wrong it is passing legislation

Explanation:

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.