Who said the phrase “divide and conquer”?

The phrase "divide and conquer" is attributed to the Roman general and politician Julius Caesar. He is said to have used the phrase to describe a strategy he employed to conquer Gaul in the 1st century BC. The strategy involved dividing the Gauls into smaller, more manageable groups, and then attacking each group separately. This strategy allowed Caesar to gain control of a large area with relatively few resources. The phrase is now used to describe any strategy that involves breaking up a large, unified group into smaller, more manageable pieces in order to achieve an overall goal.