12

Year 12 was a (link will display the full calendar) of the.

Roman Empire

 * is appointed of.
 * and become.
 * returns from to become a counselor to.
 * orders a major invasion of Germany beyond the.

Arts and Sciences

 * stops writing because of the lack of resources (being far from the libraries of ).  He completes 6 books that detail festivals found in the Roman Calendar.