How did the oil industry change america?

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.

Explanation:

the safahids used force when persuasion to convert from being a sunni muslim to embrace shi'ism was not effective. they also persecute shi'ites who have different views from their imposed teachings.