Final answer:
John Smith is famously known as the leader of the Jamestown colony who implemented strict discipline to ensure its survival. He was a key figure in interacting with the Powhatan Indians, but not responsible for tobacco cultivation in Virginia, which was John Rolfe's contribution.
Step-by-step explanation:
John Smith was most famous as the leader of the Jamestown colony who helped it survive by prescribing strict discipline, as indicated by Option 1. His leadership and resourcefulness were pivotal during the difficult early days of the colony. Although Smith was often at odds with the other colonists and colony leaders due to his commoner status and brazen demeanor, his interactions with the Powhatan Indians proved crucial for the colony's survival. John Rolfe, not John Smith, was responsible for the introduction and cultivation of tobacco in Virginia, which eventually became the colony's major cash crop and led to the success of the Virginia Company.