The government is of course elected by the people during elections. where everyone ends up having an equal vote. The constitution is called the Grundgesetz. Where it sets out fight for the rights of the people, it ends up describing the main purpose of the President, the Cabinet, the Bundestag, Bundesrat and the Courts. The President is of course the head of state
Barbarians destroyed a lot of the documentation in 390BC, Historians now are left to piece the puzzle and grasp an understanding based on the evidence left
Popular sovereignty was also included in Article V of the Constitution, which provides the means to amend the Constitution through the elected representatives of the people.
You have to do all of them for the reward
The answer is Roman atwood