The caffeine content was on the label but rather small for such an extreme amount. Additionally, it was not put in relation to anything for 2 of the 3 lemonades, they only wrote the coffeine content in milligram, very few people can relate to this information without looking it other drinks.
For one of them, it claimed to be in similar strength as their coffee, which was a lie according to the lawsuit, as their coffee has "normal" coffeine content.
Yes, the original roman ones. This is the origin of the word. They were appointed for emergencies with a lot of power.
They all gave up their position after a while except for Caesar. When Caesar was appointed as a lifelong dictator, he was shortly after assassinated by most members of the senate. But the turmoil led to the Roman Empire not being "democratic" anyway.