Kingdoms

Corvenian Empire, The	Powerful expansionist empire.
Echia	War-born island nation still in its infancy.
Kaeyl	Frozen country of the north populated by the great boatman and savage warriors.
Koyr	Vast and largely unexplored plains inhabited by nomadic horsemen.
Kyladia	The sophisticated home of the Kyladians - also known as the Red Elves.
Nygia	A nation carved out of an exodus of half-orcs from Kaeyl and birth-place of The Path
Orcan Hold	The frozen wasteland bordering Kaeyl to the north, inhabited by the Ice Orcs.
Thessal	The highly religious kingdom where Ethenaism was born.

Organizations

Black Lions, The	The iniquistion of Sister Helen's Church.
Highland Clansmen, The	The roaming free people of Echian highlands.
Sister Helen's Church	A powerful Ethenian church in Cerl, Echia
The Baltair Company	A mercenary organization that operates from Cerl, Echia

Book of Ethena, The	A recounting, in brief, of the events that began Ethenaism.
Hundred-Year-War, The	The world was torn asunder about 20 years ago in a world war.

Echian Paganism	The way of the Echian dwyr, a polytheistic religion worshiping more gods than could possibly be counted.
Ethenaism	Fashionable religion inspired by Ethena's teachings.
The Path	Rigid code of life in which one most thrive, above all things, to fulfill your purpose.
Kaeylite Patheos	Stories of the ancient warrior-gods instill wisdom to help you defeat your enemies.

Aviv the Blind	Aviv, First of the Ethenian prophets
Ethena	General, religious leader and prophet from Thessal, founder member of Ethenaism.

Modifications to the SRD / Core Rules.

Races	The races in Fallen Kingdoms are a little different
Classes	New classes and/or archetypes of existing classes
Backgrounds	Background thematic to Fallen Kingdoms
Languages	Languages of the realms - some rules modifications here, too.
Spells	Additional spells!