Answer:
He vigorously promoted the conservation movement, emphasizing efficient use of natural resources. He dramatically expanded the system of national parks and national forests. After 1906, he moved to the left, attacking big business, proposing a welfare state, and supporting labor unions.
Explanation:
What important things did Theodore Roosevelt do during his presidency?
His presidency saw the passage of the Pure Food and Drug Act, which established the Food and Drug Administration to regulate food safety, and the Hepburn Act, which increased the regulatory power of the Interstate Commerce Commission.
