How did Theodore Roosevelt change the role of the president in the federal government?

"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:

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. Roosevelt mediated the Russo-Japanese War (1904–1905), for which he won the 1906 Nobel Peace Prize.

Explanation:

that's what my teacher said

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hello! : )

i think a judge or jury, as they preside over the court and is the central figure in a trial.

hope this and i hope i answered in time!

good luck!

~ destiny ^_^