Final answer:
NASA was established as a civilian agency to avoid military politicking, allowing space exploration to be carried out for peaceful civilian purposes during the Cold War.
Step-by-step explanation:
The agency that was created as a civilian one to avoid military politicking is the National Aeronautics and Space Administration (NASA). Established in 1958, NASA was created in direct response to Soviet Union's advancement in space technology during the Cold War. The aim was to ensure that space exploration was carried out for peaceful civilian purposes rather than military advantage. This decision was largely influenced by public sentiment which favored a civilian-run space exploration program over a military one. Thus, NASA became the forefront agency in the advancement of space exploration and research.
Learn more about Creation of NASA