What caused the patricians to decide that a change in the republic needed to happen?

Though the Roman Republic stood for several centuries, tensions within the government began to tear it apart. Civil wars started between groups with different loyalties, which brought about the transformation of the republic into an empire. To calm the angry plebeians, the patricians made some changes to Rome's government. For example, they created new offices that could only be held by plebeians. To fulfill its duties, each part of the government had its own powers, rights, and privileges. In 509 B.C.E., a group of patricians, led by Lucius Julius Brutus, rebelled. They drove out the last Etruscan king. In place of a monarchy, they created a republic. In a republic, elected officials govern for the people

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i also think it is c