How did John D. Rockefeller's purchase of a barrel-making factory contribute to the expansion of his petroleum business? А
It allowed him to reduce his cost of production
B
It allowed him to guarantee he had the best barrels.
С
It allowed him to diversify his investments and make more money.
D
It allowed him to make enough money building barrels to buy established petroleum companies.

Apex plz i’m almost done if i get this all right

Which statement describes the influence of elizabeth i on england? a. her great inherited wealth made requesting funds from parliament rarely necessary, which minimized conflicts. b.her skillful use of personal advisers to communicate her wishes to parliament promoted stability. c.her clever secret diplomacy and many successful wars made her popular with the english people. d.her continuing support of english explorers in the americas brought in vast supplies of silver and gold.

The sahel is located on the edge of the sahara desert. a.north b.west c.south d.east