what effectively started the space race? the founding of the cia the trinity atomic test the launch of sputnik

Brief Explanations:

The Space Race was a competition between the United States and the Soviet Union in the 20th century to achieve superior spaceflight capability. The launch of Sputnik 1 by the Soviet Union on October 4, 1957, was a significant event. It was the first artificial Earth satellite. This event shocked the United States and led to increased efforts in the U.S. space program, effectively starting the Space Race. The founding of the CIA (Central Intelligence Agency) in 1947 was related to intelligence gathering, not the Space Race. The Trinity atomic test in 1945 was part of the development of nuclear weapons, not space exploration.

Answer:

the launch of Sputnik