divide and conquer
In order to rule securely, do not allow alliances between your enemies.
ADJ
great, sharp | growing | north-south, etc. | class, cultural, ideological, religious, sectarian | party
VERB + DIVIDE
close
DIVIDE + VERB
widen | narrow | open (up)
PREP
~ between
There is a growing divide between those who use social media and those who don't.
~ in
There was a growing divide in their opinions about how to raise their children.
ADV
broadly, roughly
The students can be divided roughly into those who prefer math and those who prefer science.
exactly | clearly
conveniently, neatly
The classroom divided conveniently into pairs for the science experiment.
evenly
up
The teacher divided up the class into four groups for the project work.
PREP
into
The country divided into two regions after the political agreement was reached.
PHRASES
divide in two
The road divides in two just before you reach the town center.
ADV
equally | up
PREP
among/amongst
The teacher divided the art supplies amongst the students so everyone had enough materials.
between
The company split its budget between marketing and product development.
ADV
bitterly, deeply, hopelessly, seriously, sharply
The new policy has deeply divided the school staff, with some teachers strongly supporting it and others completely against it.
evenly
PHRASES
be divided about/on/over sth
The team was divided over whether to accept the new contract offer.