How did oil change the United States?

The discovery of the Spindletop geyser in 1901 drove huge growth in the oil industry. Within a year, more than 1,500 oil companies had been chartered, and oil became the dominant fuel of the 20th century and an integral part of the American economy.

Explanation:

oil is the most dominate thing in the U.S. It is the most important thing to people's lives and jobs.

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