In which business did andrew carnegie create a monopoly?
the steel business
the oil business
the automobile business
the telephone business

Andrew Carnegie created a monopoly in the steel business.

Explanation:

Andrew Carnegie was a Scottish-naturalized American entrepreneur.

Carnegie is remembered for having built one of the most powerful and influential companies in the history of the United States, the Carnegie Steel Company, and later in the last years of his life he became famous for his philanthropic activity, which allowed to establish universities, libraries and museums in the United States, in Scotland and other countries around the world.

the answer wold be b) travel among nations should be regulated by an international organization

a.tensions between the colonial elites and the backcountry men of virginia.