The Space Race
The wonderful space race, beginning in 1955 and lasting until 1975 was a competition between the United States and the Soviet Union where they were trying to achieve superiority in spaceflight. The competition between the U.S and the Soviet Union began in 1955 when the U.S announced their intention to launch artificial satellites, and four days later the Soviet Union announced that they would also be launching a satellite(s) “in the near future”
In October 1957 the USSR achieved the first successful satellite launch, as well as in April 1961 sent the first human into orbit beating the U.S in first human into orbit which took place in May 1961. Shortly after the U.Ss first human launch, John F. Kennedy proceeded to raise the stakes and asked the U.S Congress to commit to the goal of landing a man on the moon and returning him safely. Both the U.S and the Soviet Union then proceeded to develop super heavy lift launch vehicles, and later in July of 1969 Apollo 11 proceeded to launch and land man on the moon, the USSR pursued two crewed lunar programs but failed to beat the U.S in first man on the moon, and later began to concentrate on Salyut which was the first space station program.
It is necessary because if you don't have a confirmed opinion with textual evidence to back it up you wont have a good argument.
Explanation:
The answer is that they breath air because people do too
