Final answer:
John Smith was forced to return to England in 1609 due to various challenges at Jamestown. Despite his conflict with the men, Captain Newport's return saved Smith and the colony. Smith's injuries, the end of his term, and the preparations to return further influenced his decision to go back to England.
Step-by-step explanation:
John Smith was forced to return to England in 1609 because he was facing numerous challenges at Jamestown. The colony had been reduced to just forty men who wanted to go back to England due to cold, sickness, and hunger.
Smith threatened to fire on them and the ship to make them stay, but in turn, they voted to have him arrested and executed.
However, Captain Newport returned just in time to save Smith and the colony. The combination of Smith's injuries, the end of his term as president, and the ships preparing to return to England convinced him to go back home.