Answer:
The launch of the soviet satellite "Спутник"
Explanation:
The Soviet Union has successfully launched a Satellite named "Спутник" into the earths orbit. The United States started to panic because of the rumors that the satellite could see every single base United States had. The Space Race was later fueled after the Soviets successfully launched a dog into space named лайка. Following that launch several months later Cosmonaut Юрий Гагарин was sent into space as the first man to go into space.
Productivity is an economic measure of the amount of output (revenue, sales, profit) resulting from a measure of input (land, labor, capital).
It is a measure of the amount of output produced by a given amount of inputs in a specific period of time.