>>39828
>Wonder if the roman state promoted veganism?
No. They ate lots of meat

>I know that the diet of the roman soldier mostly comprised of barley and porridge.

Here's a complete, in-depth summary of what everyone ate in Rome, from soldiers to civilians

https://en.wikipedia.org/wiki/Ancient_Roman_cuisine

https://us.mealkitsupply.com/blogs/news/what-did-roman-soldiers-eat

https://www.thoughtco.com/did-roman-soldiers-eat-meat-120634

>>39789
>How did it go from Jesus to catholicism based in Rome and a pope as the head of the church?