 
<translate> Ozi dị mkpa iji zaa ajụjụ a dị n'elu bụ: Ọsọ Space na-ezo aka na asọmpi narị afọ nke 20 n'etiti ndị iro abụọ nke Agha Nzuzo, Soviet Union (USSR) na United States (US), maka ịchịkwa ikike ụgbọ elu mbara igwe. Ya mere, azịza ikpeazụ bụ Soviet Union (USSR). <eng> The relevant information to answer the above question is: The Space Race refers to the 20th-century competition between two Cold War rivals, the Soviet Union (USSR) and the United States (US), for dominance in spaceflight capability.
So, the final answer is the Soviet Union ( USSR ). 