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Answer: Germany
The United States created a secret program called "Operation Paperclip" in which German scientists, engineers and technicians, some of them with ties to the Nazi Party, were taken to the United States between 1945 and 1959. These scientists were meant to cooperate with the U. S. so that the country could gain military advantage in the Cold War and the Space Race.
The country worked with the us after world war ii to build rockets for the US space program is Germany.
What is US space program?
U.S. space exploration is known to be a kind of a federal agency that handles any thing about government works in solar system exploration and outer space work.
Note that The country worked with the us after world war ii to build rockets for the US space program is Germany.
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