Who created a monopoly in the U.S . oil industry during the late 1800s? Samuel Gompers Ulysses S Grant John D Rockefeller Theodore Roosevelt

## Step 1<br />The question is asking for the person who created a monopoly in the U.S. oil industry during the late 1800s. A monopoly is a situation where a single company or group controls the entire market for a particular product or service.<br />## Step 2<br />The options provided are Samuel Gompers, Ulysses S Grant, John D Rockefeller, and Theodore Roosevelt. We need to identify the person who is known for creating a monopoly in the U.S. oil industry.<br />## Step 3<br />John D. Rockefeller is known for creating a monopoly in the U.S. oil industry during the late 1800s. He was the founder of the Standard Oil Company, which became the largest oil refining company in the world.<br />## Step 4<br />Rockefeller's business practices were controversial, as he used aggressive tactics to eliminate competition and establish a monopoly. This led to the passage of the Sherman Antitrust Act in 1890, which was the first federal act that outlawed monopolistic business practices.