<span>He was a Mexican serial killer
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Self made steel tycoon and philanthropist, Andrew Carnegie was one of the wealthiest men in the 19th century, a business man who donated toward the new York public library. I assume that answers the question?.
Answer: Imperialism
Explanation: European expansion into the western world was the biggest factor in them becoming involved into world war I.
To cause a liberal revolution in Libson in1820.