I am a 25-year-old male non-slave laborer/artisan/farmer alive at the rough centerpoint of the period & civilization you specialize in: what sort of taxes or duties am I expected to provide for my government? What institutions, laws, processes, and persons are involved in my provision of them?

These sorts of questions aren't allowed. From the rules:

No "in your era" or "throughout history" questions One of our key principles regarding questions is that they should be as precise as possible; we do not want threads that will attract only bad answers, or are so generalised that they cannot be answered. We will therefore remove questions that are seeking trivia rather than informed answers.

Our guiding principle is that if a thread can be summarised as "tell me random stuff about X through history" then it falls into this category of trivia rather than looking for in-depth answers which is this community’s main focus. Questions likely to be removed are those asking about all history and all places at once. If your question includes the phrase "In your area of expertise" strongly reconsider posting it, or making it more specific. Instead, any questions that are looking for trivia or for extremely general topics should turn to our weekly Meta threads; the Friday-Free-for-All thread in particular is well suited to many of these questions, as is the Tuesday Trivia thread. Many general questions have been well explored in the past, and you might find lots of interesting information in the archive of both Tuesday Trivia and Friday Free-for-All threads.