During the presidency of theodore roosevelt, how did the us government protect businesses?

He did that by breaking up railroad trust

The railroad trust was created by J.P Morgan, James J. Hill, J.D Rockfeller, and their other associates which granted them the right over Northern Pacific Railway, Great Northern Railway, and other associated lines which basically give them a huge economic power in Northern America

In 1902, the Justice Department under Theodore Roosevelt filed the first anti-trust cases against corporate interest, creating opportunities for other business to develop

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.