Who had the right to veto each others decision in ancient rome?

Answer 1

During the Roman Republic all the five types ofofficersof state had the power of veto.Officersof state of the same rank could veto each other's actions andofficersof state of higher rank could veto the actions ofofficersof state of lower rank. It was the actions not the decisions which were vetoed, and therefore, stopped.

Answer 2

In the Roman Republic the officers of state had the power to veto, which was used to block the actions of officers of state of equal or lower rank. The plebeian tribunes also had the power to veto and could use it to block the actions of any officer of state when they deemed such action to be harmful to the interests of the plebeians.

You could not veto a law, but you could block the action of submitting a bill to the senate for advice or proposing it to a popular assembly for voting when the action was about to be carried out.

The veto had to be served on the person who was to be vetoed. Before the plebeian tribunes became the main proposers of legislation, they were the ones who vetoed the action of proposing a bill more often. They put a table by the entrance of the senate house and sat there, waiting for the person to be vetoed, and then served it. The vetoer made his intention public before executing it. The person who was target of the veto could seek the withdrawal of the veto or ask the senate for a vote of blame on a person who opposed a measure which was for the public good.

This practice was, among other things, connected to the fact that the Roman Republic did not have a centralised government or cabinet/administration. All officers of state were elected and operated independently within the remit of their office.