Questions: When the United States Steel Corporation was created in 1902, it was the largest corporation America had known up to that time. It produced twice as much steel as all of its domestic competitors put together. Today, the United States Steel Corporation produces about 20 percent of the steel that is made in this country. In 1902, the United States Steel Corporation produced not less than 66 percent of the total domestic output of steel.

The answer is: Conclusion follows.

Explanation: The passage states that when the United States Steel Corporation was created in 1902, it produced twice as much steel as all of its domestic competitors combined. This implies that the corporation produced more than half of the total domestic steel output. Specifically, if it produced twice as much as all other competitors together, it means it produced 2/3 (or approximately 66.67%) of the total domestic steel output. Therefore, the statement that "In 1902, the United States Steel Corporation produced not less than 66 percent of the total domestic output of steel" logically follows from the information provided.