Capitalist who made his fortune in oil and founded the nation's first trust in the form of the <em>Standard Oil Company</em>. business started by John D. Rockefeller that was the United States' first trust.
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Answer:
MILITARISM
.Explanation:
The first long-term cause of World War I is militarism. Militarism can best be understood as the buildup or expansion of the ability of a country's military to wage war.
Answer:
a.it was a big business in the railroad industry.