The second civilian astronaut who flew on Apollo 7 was Walter Cunningham
Answer: Option (a)
<u>Explanation:</u>
Apollo 7 mission was proposed in October 1968 and this was the first mission to carry crew(members) to the space.
This mission consists of 3 crew members,
- Commander "Walter M.Schirra" Jr,
- Command module pilot " Donn F. Eisele"
- "Walter Cunningham" as lunar module pilot.
Lunar module pilot was the sole survivor in that mission. Apollo 7 mission lasted for nearly 21 months and it fulfills the drawback of Apollo 1 mission.
Answer:
The correct answer is A) The invention of a steel tipped plow and a reaper
Explanation:
The invention of a steel tipped plow and a reaper helped the farming industry to develop in the west.
While it seems like an ordinary tool by modern standards, the steel tipped plow was a revolution in it's day. Being strong and sturdy, it greatly improved the efficiency of ploughing and farming.
Before Steel, most people used hard wood plow which were expensive, easily damaged and not very efficient.
Some politicians became successful by opposing communism.
