Question

Who became a billionaire tycoon in America by refining oil?

J.P. Morgan
Andrew Carnegie
John D. Rockefeller
Vanderbilt

Answer 1

John D. Rockefeller

Step-by-step explanation:

He became an assistant bookkeeper at age 16 and went into several business partnerships beginning at age 20, concentrating his business on oil refining.

Answer 2

John D. Rockefeller

Step-by-step explanation:

He became an assistant bookkeeper at age 16 and went into several business partnerships beginning at age 20, concentrating his business on oil refining.