In their competition for power, nations raced to create alliances. This is most evident during the build up to the first world war, the second world war, the cold war, the arms race, and recently the crises between Russia and Ukraine.
Therefor option A is correct.
<h3>How are Alliances Formed.</h3>
Alliances are formed mostly for benefits. Nations come together to form alliances to guaranty safety, security and economic prosperity.
These alliances are mostly formed by the government of sovereign nations with the aim of safeguarding the lives and properties of their citizens.
An outstanding example of security and power alliance is the North Atlantic Trade organization NATO.
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