Bascially
-Dragons/Dragon Cult ruled over mankind in Atmora
-Ysgramor leves Amotra and goes to Skyrim, bringing the Dragon cult with him
-Falmer kill Nords in the Night of Tears
-Ysgramor returns with the 500 companions and breaks the power of the Falmer
-Nords settle Skyrim, Dragon cult still the main religion
-Dragon cult in Skyrim gets all power mad
-Parthunax switches sides, and he and Kyne give men the ability to shout
-Dragon War
-After the Dragonwar the Nords contiune to hunt down the remaining Falmer for ages, eventually leading Skorm Snow-Strider, who armies were hunting the Flamer, the foind the last remants of the dragoncult in Forelhost in 1E 140