Its the last one; you have to be given a reason as to why you are being arrested. However, the president can suspend habeas corpus for good reason and the only one that ever did that was Lincoln and he locked up reporters who were writing harmful criticism against the war and him. Lincoln's approval rating was never good during his presidency and imagine if Nixon did that to like hippies that were protesting the war...
First of all we have to claim that Tiberius didn't love so much to be Emperor, just because he hated stay in a court... He loved so much stay in his fantastic villas, particularly which is set in Capri island, where he could enjoy himself with, according to sources, women and child. So Tiberius isn't the real figure of an emperor, he wasn't a general and it wasn't so love by his soldiers.
“Separation of powers, therefore, refers to the division of government responsibilities into distinct branches to limit any one branch from exercising the core functions of another. The intent is to prevent the concentration of power and provide for checks and balances.”
The League of nations is the correct answer. After the League of Nations failed because the United States didn't join the United Nations was created and it was successful. It still exists today.