Final answer:
The explosion of commerce in the Roman Empire was facilitated by extensive sea and land routes, the collection of taxes, access to seaports, specialization of goods, and a market economy.
Step-by-step explanation:
The explosion of commerce in the Roman Empire was facilitated by several factors. The extensive sea and land routes connected urban hubs and allowed for the exchange of goods throughout the Mediterranean region. The collection of taxes funded public works and government programs, contributing to the functioning of the economic system. Access to seaports was crucial as shipping by sea was more cost-effective than by land. The specialization of goods and the market economy, along with the focus on skilled artisans, also played a significant role in promoting trade and intercultural connections.