Napoleon the third became empire in

napoleon the third became a empire in 1873 also known as the era of the franco-prussian war.

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. 

travels along an axon. this triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse