What historical event does the author link to the United States' initial focus on technology investment, and why do you think this event caused this
reaction?

Answer is given below

Explanation:

The author states that the United States began investing in science, technology and innovation because of Sputnik's Soviet Union experiment. Sputnik's successful launch caused this backlash in the United States, as the Cold War prompted Americans to become leaders in science and technology in the world of the Soviet Union. Instead of fearing or hiding from the challenge, the United States stepped up and made a commitment to science, mathematics and innovation.

The correct answer is the hindu kush mountains.