Answer:
When Rome was a kingdom Plebeians had zero power. The Patricians were considered Nobles and the Plebeians were just low class laborers.(Pre-Republic)
It increased over time because the Roman Plebeians were more frequently threatening the Patricians that they would leave Rome and go to a neighboring nation. Each time the Patricians got scared and slowly gave the Plebeians more rights. (Republic Rome)
Eventually the Plebeians were allowed to have their own government officials which were elected and named "tribunes." Then came the Plebeian Assembly. The Tribunes had powers to summon the senate, propose and vote on law, etc. The most important power of the Tribunes was that they could veto actions of the consuls and other Roman Officials. (Republic Rome)
This made the Plebeians happy. The Patricians and Plebeians both were happy with their influence.
Hope this helps you! :)
Step-by-step explanation: