Answer: In a general sense, World War I and World War II were wars conducted on a massive scale unlike any other wars in history. They were similarly caused by nationalism, imperialism, alliances, and militarism. Both wars saw countries trying to upset the power balance in Europe for their own gain.
Explanation:
Answer:
I think its sustained trench warfare on the Western Front.
Explanation:
The Industrial Revolution saw a shift from man-made goods to machine-made products.
Hope that helps!
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( a ) european imperialism and american expansionism overseas