awww shit know what time it is? thats right, Ask someone who almost majored in roman/byzantine history anything. Ill do my best to answer!
How common was Anal Birth in the Roman Republic? Did it get more or less prevalent during the Empire?
Word of mouth, It either circulated amongst patrician families who would bring it up and chat about it or through traders. Reading was more common in rome then in latter ages europe, but it was rare only noble or scholars did it on any regular basis.
I meant to specify, in the period before the codex developed
Was it possible to buy already written scrolls or did you have to make a request for what you wanted a copy of? I remember reading that patricians would borrow scrolls from each other and have their personal scribes make a copy. Do you know if it was more common for the literate to have their own copies or whether they headed to a library if they needed to consult a work?
Some of the more popular ones could be bought at will, Like the Illiad or the Odyssey usually sold so traders could have those at sales and it be a safe bet. For anything rarer they would have to have it made or buy it from a friend. Generally most had their own libraries as it was a source of prestige but in some major cities there were libraries. Like the one in alexandria, but it was extremely hard to get into it.
If Pertinax's household guard stood his ground instead of caving, would the praetorian guard have backed down when called on their honor as citizens in your opinion?
If they did, would promises of land in the provinces in lieu of donatives be sufficient to stop the 'auction then slaughter the winner' model of emperor election that followed?