What aspects of the Constitution and Bill of Rights are meant to place a check on federal power and how? Give some examples of these aspects being implemented in the real world

1st amendment.

Explanation:

First amendment of the constitution and bill of rights restrict federal power to interfere in the freedom of the people of the states. The First Amendment is very important to the maintenance of a democratic government because it restricts or reduces the power of the federal government. For example, due to this amendment a citizen file a petition against government's injustice and the government is responsible for explaining injustice caused to the citizen.