Answer: • by helping produce crops for trade
• by contributing their skills as artisans
• by making business connections
Step-by-step explanation:
Enslaved people contributed to the growth of the Roman economy by helping produce crops for trade, contributing their skills as artisans and also by making business connections.
It should be noted that the enslaved people didn't attend school to learn about trade and also didn't vote on the laws that were economically favorable.
Therefore, the correct option is A, C and D.