By 1879 Standard Oil controlled
90 to 95 percent of the oil refined.
In its first big phase of expansion
Rockefeller's company was capable
to reduce the retail price of kerosene,
used by every household in the US,
by 70 percent.
90 to 95 percent of the oil refined.
In its first big phase of expansion
Rockefeller's company was capable
to reduce the retail price of kerosene,
used by every household in the US,
by 70 percent.