Which of the following factors helped trade to thrive during the Roman empire? Select the three correct answers.
The three factors that helped trade to thrive during the Roman Empire were:
1) The establishment of a vast and efficient road network, including the famous Appian Way, which facilitated transportation of goods and people across the empire.
2) The development of a standardized currency system, with the introduction of the denarius, which facilitated commerce and made transactions easier.
3) The Roman navy's control of the Mediterranean Sea, ensuring the protection of trade routes and the safe passage of ships.