"The Scatter"

When the Tirava began to discover and learn about science and holistic medicine causing them to pray to Brê less and less. Brê became consumed with the thought that they would eventually not need her, so Kê - in a final act of kindness from their broken relationship - had the Troppi pick seeds from the Tirava'tira and "Spread them to the FOUR REACHES of the land" an event which is now called "The Scatter". This decimated the growing population in the forest.
The groups that were spread evolved/adapted to their new surroundings becoming distinct sub-groups of the species.
The groups were:

• to the west - the Mountain Tirava
• to the north - the Ice Shadow Tirava
• to the east - the House of Rushing Water - from whence came the Tidal Tirava
• to the south - the Darkwater Tirava - from whence came the Moonburn Tirava