The ancient Roman law was more than anything else a norm issued by priests, that is a branch of religion, and was at the same time lex and jus, prescription and justice, evolved into the famous Roman law while Rome conquered all of Italy, from the mountains of the Apennines, to the lands of the Etruscans, up to Magna Graecia.
It took Rome two hundred years to grow. To the vanquished peoples, in exchange for roads, free trade and the possibility of living as they had always lived, he asked to pay taxes, to provide soldiers in case of war, to give up part of the cultivated land to be allocated to army veterans. Like it or not, they all submitted to become one people.
Rome built paved streets, called streets precisely because they consist of many layers: large stones on the bottom, pebbles, gravel and, finally, smooth and flat stones to form the pavement. All roads lead to Rome, as we know, the Aurelia, the Appia, the Salaria, the Flaminia and Emilia certainly did.
When they had conquered all of Italy, the Romans found themselves facing the sea, infested with ships of other peoples, in particular Carthaginians of Phoenician descent. The Carthaginians demanded that the Romans ask permission to travel and trade in the Mediterranean. The Romans were not willing to ask anyone’s permission, so the first Punic war broke out (264–241 BC)
The Carthaginians were expert sailors, they had built many ports, they knew how to navigate well. The Roman soldiers, on the other hand, in peacetime were peasants and were unable to make war on the water. Then the Romans devised a system to feel on land even at sea. They put gangways on their ships, which hooked with hooks to enemy boats during the battle. On the catwalk the Romans fought as if they had been on the ground.
The first war between the Romans and the Carthaginians was thus won by the Romans who became masters of Sicily and Sardinia