Which if the following factors helped trade to thrive during the Roman empure? Select the three correct answers

Answer 1

1. Establishment of a vast network of roads and highways for easy transportation of goods
2. Use of standardized coinage and currency for easy exchange of goods
3. Construction of harbors and ports to facilitate maritime trade
4. Implementation of a universal language (Latin) for communication among traders
5. Promotion of agricultural advancements to increase surplus production for trade opportunities