Which of the following describes the central theme of the text

i believe it would be capitalism

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. 

1.) irish.

2.) settlers could obtain cheap land nearby

3.) steam engine

explanation: