Final answer:
Neil Armstrong was the man most responsible for man being able to walk on the moon as part of the Apollo 11 mission in 1969.
Step-by-step explanation:
The man most responsible for man being able to walk on the moon was Neil Armstrong.
Neil Armstrong was an American astronaut and aeronautical engineer who became the first person to walk on the moon as part of the Apollo 11 mission in 1969. His famous words, 'That's one small step for man, one giant leap for mankind,' are still remembered today as a significant moment in human history.
Neil Armstrong's achievement was made possible by the efforts of many individuals and organizations, including NASA, President John F. Kennedy, who set the goal of landing a man on the moon, and the engineers and scientists who designed and built the spacecraft and lunar module.