In one to two sentences, explain how we can trace holiday lights back to technological advancements in the Cold War.

The Cold War, which started after the Second World War and spanned 1947 to 1991 refers to a period of political unease between the United States, the Soviet Union and their respective alliances.  

In that period, specifically 1962, the Light-Emitting Diode (which has variants of red, blue and green that can be combined to produce the most perceptible colours, usable as holiday lights) was as invented.

Cheers!

c is your answer have a great day make the brainlest

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.