What US adopted all of the following political ideals from Romans except what?

The U.S. adopted many political ideals from the Romans, such as republicanism, the rule of law, and civic virtue. However, the U.S. did not adopt the Roman practice of Dictatorship, where a single leader could hold absolute power, especially during times of crisis. Instead, the U.S. Constitution establishes a system of checks and balances to prevent any one branch of government from gaining too much power.