The concilium plebis was the assembly of the plebs in ancient Rome. Its voting was divided on the basis of tribes, though it could not make decisions that were binding on the entire populus (patricians and plebs) and its resolutions were called plebiscites.
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The Tribune of the Plebeians or the Tribune of the People was a magistracy established in 494 BCE just 15 years after the foundation of the Roman Republic in 509 BCE. They enjoyed recognition and authority limited though in the surroundings of Rome [less than a mile from the city's borders]. They were elected by the Consilium Plebis for one year and they did sit in the Senate.
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If you mean the Concilium Plebis, no, the patricians had nothing to do with it. It was a counsul of the Plebs. It could only be conviended by a Tribune of the plebs or an aedile of the plebs.
It was the Plebeian Council (Concilium Plebis)
471 B.C. Source: My World History textbook :)
the assembly of the soldiers (comitia centuriata), the assembly of the ribes (comitia tributa) and the plebeian council (concilium plebis)
Concilium - journal - was created in 1965.
Sacrosanctum Concilium was created in 1963.
If you mean the military tribunes, they were created right at the beginning of the creation of the Roman army by Romulus, the founder of the city and its first king. If you mean the plebeians tribunes, they were created during the first rebellion of the poor plebeians: the First Plebeian Secession (494 BC). The plebeian movement created its leaders (the plebeians tribunes) and their assistants (the plebeian aediles) and the assembly of the movement, the plebeian council (concilium plebis).
They were the tribuni plebis, plebeian tribunes or tribunes of the plebs.
It depended on the kind of tribune. During the Roman Republic the Tribunes of the Soldiers were elected by the Assembly of the tribes. Each year 24 young men in their late twenties with senatorial ambitions were elected to serve as Tribunes of the Soldiers (tribuni militum). They were distributed six to each of the consuls' four legions as the legions' commanding officers. The Tribunes of the Plebs (or Plebeian Tribunes), who were the leaders of the plebeians and represented the interests of the plebeians were elected by the Plebeian Council (Concilium Plebis).
In the period of the Roman Republic there were three popular assemblies: the Assembly of the Soldiers (comtia centuriata), the Assembly of the Tribe (comitia tributa) and the Plebeian Council (concilium plebis. The Assembly of the Soldiers gathered the soldiers to vote on war or peace and to elect the higher executive officers of state. The Assembly of the Tribes gathered all citizens and elected the lower officers of state. The Plebeian council gathered the commoners (plebeians), elected the plebeian tribunes (the representatives of the plebeians) and voted on bills.
The Roman Republic was established in 509 BC with the overthrow of the last king in a rebellion because he was a tyrant. It was set up so as to prevent one man from concentrating power in his hands to avoid the return of tyranny. This was done by replacing the king with two annually elected consuls as heads of the city and the army. Having two men in charge meant that they could counterbalance each other The short term of office prevented accumulation of power by either of these two men. Apart from the creation of the consuls, at the beginning the Republic retained the institutions of the Monarchy. The senate remained as an advisory body, this time for the consuls, and the two popular assemblies established by the 6th king of Rome, Servius Tullius, as the city's voting bodies were retained: the assembly of the soldiers (comitia centuriata) and the assembly of the tribes (comitia tributa). Over time four officers of state were created in addition to the consuls: the praetors, the censors, the aediles and the quatestors. The first rebellion of the plebeians (commoners), the First Plebeian Secession in 495, led to the creation of the leaders of the plebeian movement, the plebeian tribune (tribuni plebis) who represented the interests of the plebeians, their assistants (the plebeian aediles, aediles plebis) and a plebeian assembly which was called the plebeian council (concilium plebis).