Final answer:
John Smith was considered a great leader due to his hard work, good relationship with Native Americans, and reputation as a hero.
Step-by-step explanation:
John Smith was considered a great leader for several reasons. Firstly, he worked hard and expected others to do the same, which helped improve the survival and success of the Jamestown colony. Secondly, he maintained a good relationship with the Native Americans, successfully negotiating peace and trade agreements. Lastly, he was known as a hero back in England due to his adventurous life and self-promotion, which made him a well-respected figure.