De Beers became a monopoly by:
A)establishing control over diamond mines.
B)use of economies of scale.
C)use of technological superiority.
D)ownership of a patent.

Question

Quizplus · Accepted Answer

De Beers established control over diamond mines by buying out or controlling the majority of diamond mines in South Africa. This gave them a monopoly over the diamond trade, as they could control the supply and price of diamonds.

De Beers Became a Monopoly By