Assuming you're referring to Theodore Roosevelt, one of the most successful things he did in terms of regulating big business was the "break up the trusts,"--in that he took to court companies that were suspected of colluding with other firms and forming monopolies.
Answer:
They decided to split the border I think
Explanation:
They wanted America to defeat Central Powers
<span>United States involvement in World War II rapidly accelerated economic growth</span>