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:

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.

demand is the need and oportunity to buy a given good or service.