Answer:
The iron and steel industry spawned new construction materials, the railroads connected the country and the discovery of oil provided a new source of fuel. ... 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.Although the discovery of oil creates a sense of hope and expectation that the revenue would lead to the development of local communities and countries as a whole, in most cases, this dream has remained illusory as the exploration of the oil resources has led to the destruction of local communities and anarchy in oil.
Step-by-step explanation: