How did a trust allow John D. Rockefeller to create a monopoly over the American oil industry?

The trust built confidence in the reliability of the heads of oil companies.

The trust guaranteed that the oil industry would use fair practices.

The trust had a single board of directors that could control several oil-related companies.

The trust provided securities and stock options that no other organization had.

Question

How did a trust allow John D. Rockefeller to create a monopoly over the American oil industry?
		
The trust built confidence in the reliability of the heads of oil companies.
		
The trust guaranteed that the oil industry would use fair practices.
		
The trust had a single board of directors that could control several oil-related companies.
		
The trust provided securities and stock options that no other organization had.

living4jesus · Answer

which one do you think it is?

living4jesus · Answer

A single board of directors could control several oil-related companies.

annkisa · Answer

....First one no clue
Second one could be