We petitioned the to improve the subway system.

Government.

Explanation:

The right of petition is the right of a citizen or group of citizens to submit a request to official bodies such as the government. The petition is an instrument for citizens to signal to representatives that their action is necessary.  

In the United States of America, the First Amendment to the United States Constitution contains a Petition Clause. This right is also based on the right to bring legal proceedings against the government.

Sent royal judges to every part of England 2. introduced jury system 3. formed common law, a unified body of law.

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