How do the roles of government as defined by adam smith support a country’s economic interest

The roles of government as defined by Adam smith support a country’s economic interest as follows:

In the book titled “Wealth of Nations”, Adam Smith, who is also known as the father of economics, mentions that "Government should limit its activities to administer justice, enforcing private property rights, and defending the nation against aggression."

He was in favor of a free economy and the idea of people having the required amount of freedom to make economic decisions. He meant that by doing so there will be economic prosperity, which remains as the main idea which supports free economy.

it took two men to wrestle rome back from chaos and turn a republic into an empire. in the first century bc, rome was a republic. power lay in the hands of the senate, elected by roman citizens. but the senators were fighting for power between themselves.