What was the strength of romes constitutional division of powers, according to Polybius

Checks and balances

Explanation:

Polybius was widely known as a Greek historian. In his analysis of a mixed constitution or the separation of powers in government, he concluded that the strength of Rome's constitutional division of powers is "Check and Balances."

This he explained that the act of spreading power out and giving various offices a particular function, the Romans formed checks and balances that ensured an orderly interdependence by prohibiting government excess and decentralizing power.