From publisher blurb:
Welcome to the second FAITH & DEMONS: THE RISING NATION GUIDE, a series of mini-sourcebooks detailing the different nations during the Dark Ages. Each Nation Guide depicts historical information alongside that of mythology, folklore, speculation, and fiction for the purpose of providing additional content for your adventures and campaigns. This second Nation Guide details the Bulgarian Empire located in modern day Bulgaria and Macedonia.
Faith & Demons Nation Guide: Bulgarian Empire includes:
A detailed look at the Bulgar Tengriism religion.
A Gazetteer detailing the Bulgarian cities.
Alternate history adventure hooks.
A near 400-year timeline of historical events.
New Hindrances and Edges.
8 new creatures from Slavic Paganism and Tengriism folklore.