Which of the following was an effect of the Cold War arms race between the Soviet Union and the United States?
O A. Economic regulation in both nations increased.
B. Governments invested greatly in scientific research.
O C. Both nations expanded their colonial empires.
O D. Fewer civil wars occurred worldwide.

B

Explanation:

The arms race was a de facto competition between the USSR and the USA to see which country was better developed, which country had more / better nuclear weapons as a result of tensions from after WWII.

Both governments invested in scientific research into how to create better nuclear weapons: bombs that were more powerful than the other, as a way to try and win the nuclear arms race, or at least get ahead.

I think this is what the question is asking :)

a true

explanation: