Answer:
Mercury, Gemini and Apollo
Explanation:
Project Mercury(1961 to 1963)
Main goal, exploring space conditions for humans to survive in.
Motivated by Gagarin, (the first cosmonaut happened to be Soviet) Americans launched several astronauts who all were able to survive.
Project Mercury assesed the conditions for humans could survive in space.
Project Gemini (1965-1966)
A Gemini force was able to make maneuvers in space, allowing for the space agencies and astronauts to learn how would an eventual landing on Moon would be made possible.
Gemini maneuvers were essential to learn physics in space.
Project Apollo (1967-1972)
The conquest for the space would then materialize with Neil Amstrong coming into the moon for the first time in history of mankind.
They were able to explore Moon's topography and collect some rocks that were to be study for the origin and composition of the Moon.
The Apollo 11 was the first tripulated mission to the Moon back and forth considered a turning point in History.
