the awnser was b. im not positive but i think
The Senate refused to ratify the treaty of Versailles primarily because they objected to the League of Nations. If the US joined the League, then they would be obligated to fight in future wars and the Senate didn't want that.
The answer to your question is d you are very welcome
Answer:
a:the plebeians revolts
Explanation:
Because of these revolts the plebeians guaranteed the legal validity of the laws formulated by the Tribunes of the Plebe, so that they were valid for all extension of the Roman dominions. This revolt ended a process of long-term political reform. Despite politically balancing Roman social groups, the cultural distinction between a patrician and a plebeian did not radically change.