What business practice contributed most to andrew carnegie’s ability to form a monopoly? using profits to support charities in order to greatly improving his reputation increasing his profits every year focusing on a single aspect of steel production combining his companies into one company, and controlling all aspects of steel production

In all the businesses Andrew made a lot of profits and used that profit to build other businesses and expand the business in hand. American public turned against monopoly as there was a high jump in the prices and it wasn't affordable anymore.

Carniege steel was a monopoly company during the gilded age. Combining all the companies and running them under one production of steel contributed most to form Monopoly.

The correct answer is D) combining his companies into one company, and controlling all aspects of steel production.

The business practice that contributed most to Andrew Carnegie’s ability to form a monopoly was "combining his companies into one company, and controlling all aspects of steel production."

Carnegie was a smart man that knew when to make the correct financial decisions that favored its company. During the Depression of 1873, he made a bold move and decided to invest in steel. With the use of technology he efficient, the process of producing steel and he was buying other competitors to get a vertical growth that allowed him to form one of the most notorious monopolies in the United States, just like John Rockefeller did with his Standard Oil Company.

b is the answer i am assuming