Answer:
Russia had the largest army and German had the largest navy
Yes, I think it can as we can be at war at any time with other countries.
Answer:
By protesting and doing different demonstrations.
Explanation:
Rome was a republic before it was an empire. Romans had the first Senate, elected by the people. The third option is also correct, because even the if the emperor did something that was against the law, he would be put on trial. Also the last one, those are called "Law's" You find them everywhere. xD Hope I helped :)