What did john d. rockefeller do to establish standard oil as a monopoly?

bought stock options.

Explanation:

Standard Oil benefited from the purchase of stock options and became the world's largest oil company. Numerous competitors were absorbed by Standard Oil for the purchase of stock options. As a result, production increased and prices became competitive. The oil industry flourishes and Standard Oil becomes the leader of this new market, becoming a monopoly.

he believed that strong monarchies would lead to social and political stability.

i belive the continental association was created to boycott all contact with british goods.

i also belive it was in december 1, 1774