Not much has happened in the Roman Empire since 1994 that required the first edition to be updated, but Bunson, a prolific reference and history author, has revised it, incorporated new findings and thinking, and changed the dating style to C.E. (Common Era) and B.C.E. (Before Common Era). For the 500 years from Julius Caesar and the Gallic Wars in 59-51 B.C.E. to the fall of the empire in the west in 476 C.E, he discusses personalities, terms, sites, and events. There is very little cross-referencing.