divide and conquer

: to separate into two or more parts, areas, or groups

: to separate into classes, categories, or divisions

: cleave, part

: an act of dividing

: a dividing ridge between drainage areas

: a point or line of division or disagreement

: to gain or acquire by force of arms : subjugate

: to overcome by force of arms : vanquish

: to gain mastery over or win by overcoming obstacles or opposition