Astral Oil Works became part of which branch that was owned by wealthiest American of all time?
Astral Oil Works:  Charles Pratt and Company (including Astral Oil) became part of John D. Rockefeller’s Standard Oil Trust in 1874, although the fact that Astral Oil was a New York branch of Standard Oil in Ohio was not made public until 1892. John D. Rockefeller: John Davison Rockefeller Sr. (July 8, 1839 – May 23, 1937) was an American oil industry business magnate and philanthropist.
i don't know