So I have started a game as the Wraith race, and I've upgraded my military so that i can design units that are mounted on horseback. It requires a horse resource to make them, so I found a tile with "wild horses" on it.
I built a settlement near it, and it says my faction cannot get the resource. So I guess my confusion is two-fold
A.) What type of tile do I need to get horses as a wraith? And also
B.) Why is the first upgrade for military equipment giving me horses, but I can't mine the horses to get them?