Electing tribunes and displaying the law of the twelve tables a) benefited patricians. b) showed the influence of the etruscans. c) protected plebeians against unjust treatment by patricians. d) violated the constitution hammered out by patricians and plebeians.

 C) protected plebeians against unjust treatment by patricians.

The tribune was the title of several elected officials in ancient Rome, most importantly the Tribune of the Plebs and the Military Tribunes. The Tribune of the plebs acted as a check on the authority of the senate and the annual magistrates, intervened on behalf of plebeians and vetoed unfavourable legislation.

Moreover, the plebeians obtained protection from the Law of the Twelve Tables. This legislation was at the foundation of Roman law. It was displayed in the Forum and stated the rights and duties of Roman citizens.

the united states didn't wanted to get involve with other countries probelms

observing traffic laws in exchange for driving on the highway.