Which of the following factors helped trade to thrive during the Roman Empire? Select the three correct answers

Answer 1

1) Development of an extensive network of roads and highways for efficient transport.
2) Creation of a common currency, the denarius, for easier trade.
3) Establishment of a strong military presence to protect trade routes and ensure safety.
4) Introduction of standardized weights and measures for fair trade.
5) Adoption of a strict system of tariffs and customs duties to regulate and control trade.
6) Expansion of trade through conquest and assimilation of new territories.