Answer:
Explanation:
On October 4, 1957, the Soviet Union launched the earth's first artificial satellite, Sputnik I. As a result, the launch of Sputnik served to intensify the arms race and raise Cold War tensions. During the 1950s, both the United States and the Soviet Union were working to develop new technology.
I'm not sure what class this is for, but in Psychology this would be considered Naturalistic Observation. Hope this helps :)
D. Helispot. <span>Helispots are temporarily located as an incident grows, and often have markings to determine their use for emergency incidents. </span>