How the 4 warrior clans came to be?

The warrior Clans were just a lot of cats with 5 different atributes such as swimming for RiverClan, or hunting in the trees for SkyClan... or running quickly for WindClan, and that kind of stuff. So when there was this prey shortage the groups of cats ( including Sky, Thunder, River, Shadow, and WInd,) had a big battle, this wasn't jsut a skirmish! Fourtrees was all bloody and the spirits of their dead friends and kin came and told them to unite or die! So there were 5 clans now... The fifth clan, SkyClan, was driven out of the forest when Twolegs came and turned their territory into what is now the Twoleg place rusty/firepaw/fireheart/firestar came from.... Sorry for the long answer but now you know! You can read code of the clans to read more about it...