Federalism is a system of government in which entities such as states or provinces share power with a national government.
It would be the "Necessary and Proper Clause" that establishes many implied powers of Congress, since this allows Congress to do whatever is "necessary and proper" to keep the United States functioning.
Answer:
d) it brought lawsuits against many corporations
Explanation:
President William Howard Taft was Roosevelt's successor, he carried out many of Roosevelt’s progressivism and continued to bring lawsuits against many corporations. He also provided a series of reform policies for a more efficient administration that made prosecution of antitrust violations easier. More than 99 anti trusts prosecutions occurred under Taft’s Presidency.