That is no way to answer someone
The Declaration of Independence states that the United States of America is a country in its own right, independent of England, and includes a list of grievances against the king of England, while the U.S. Constitution formed our federal government and set the laws of the land.
Answer:
The khan was the ruler of the Mongolian Empire. That's why the rulers of Mongolia all had khan after their name (Genghis Khan, Kublai Khan etc.). A farmer would've been a "fyermyer", a priest would've been a "tackhilch" and a soldier would've been a "tsereg". The actually way to say king would've been "khaan" (pronounced xan) not khan.
If you are talking about the Second Industrial Revolution, then the person who had a monopoly in the steel industry was Andrew Carnegie.
Hope this helps!