The arms race was the result of the cuban missile crisis. the reason the united nations was formed. an expression of cold war tensions. a reason that the allies won world war ii.

The third one ( or C idk)

Explanation:

That crisis made the fear of a atomic war more real than everthing at the time, and showed to everyone that the thing could go nuclear at any time because the tensions between the countries

adopted the practice of proskynesis, a persian court custom that involved bowing down and kissing the hand of others, depending on their rank.