A growing willingness among European powers to fight one another for supremacy resulted from military buildups and increasing rivalries among European powers in the early 20th century.
The answer is option B.
In 1914, rising tensions in Europe had the continent on the brink of struggle. these tensions were the end result of four elements: militarism, alliances, imperialism, and nationalism. In the early 1900s, EU nations had beneath- taken a huge navy buildup.
World War II in Europe began in 1939 with Nazi Germany invading Poland. Through persistent efforts of teamwork and ingenuity, the Allied powers were capable of defeating Nazi Germany and free Europe.
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