Respuesta :

Answer:

mainly through oil

Explanation:

Rockefeller: Standard Oil. In 1865, Rockefeller borrowed money to buy out some of his partners and take control of the refinery, which had become the largest in Cleveland. Over the next few years, he acquired new partners and expanded his business interests in the growing oil industry

Answer:

standarded oil

Explanation:

Rockefeller: Standard Oil. In 1865, Rockefeller borrowed money to buy out some of his partners and take control of the refinery, which had become the largest in Cleveland. Over the next few years, he acquired new partners and expanded his business interests in the growing oil industry