Final answer:
Some of the Romans heated their homes using fireplaces, stoves, and a heating system called a hypocaust.
Step-by-step explanation:
Some of the Romans heated their homes using fireplaces and stoves. Fireplaces were commonly used for heating larger spaces, while stoves were used for smaller rooms and cooking. The Romans also developed a heating system called a hypocaust, which used clay pipes to carry smoke and heat around the inside walls of a house. This system provided warmth and comfort even in houses that were just a pit in the ground.