Military action
The war between the Elves and the Eldercrestarians.
The first encounter between the Eldercrestarians and the elves escalated to a full-scale war. The Elven war were the elves fought for their right to dwell in the land alongside Eldercrestarians Continued for hundreds of years. And the only reason for the Elves never really got defeated by the superior Eldercrestarians were sorely based on the veterans of their soldiers and their connection to the first tree of Family located on top of the elven portal.