Go here for Tuaram culture. For a visual timeline of Riigan history, go here. The following page describes the largest power in the respective areas at the time. Some gaps and overlaps occur, and many ancient dates are estimates.
1900BD - 1100BD
1000BD - 800BD
Had. Home of the Muk Zuas religion.
750BD - 600BD
550BD - 450BD
Ruins from this era include adobe structures.
Conquered by Seleru cultures until ~50AL
Forade People (2nd)
Had and Jadar. Built the Usafi Giant.
100AL - 350AL
Ruins from this era include white adobe structures.
Had. Built the Arikal Temple.
400AL - 450AL
Ruins from this era include temples.
Jadar. Home of the Ma Tu religion.
450AL - 500AL
Had and Jadar.
500AL - 650AL
650AL - 700AL
700AL - 850AL
750AL - 800AL
Modern Tuaram cultures
Jadar and Had.