According to the original BSG there was a natural disaster that forced the 13 tribes to leave Kobol. 12 of the tribes were human & left for the 12 colonies, whilst simultaneously the 13th tribe left for earth. The 13th tribe were created by humans as living robots. There was a Nuclear war on Cylon Occupied earth of which the final five recreated resurrection. They left for the 12 colonies to warn them. By the time the final five got to the 12 colonies the first cylon war broke out.
It's from here that I don't understand the finer details.
1. Why was there a nuclear war on the Earth of the 13th tribe? Was it a civil war?
2. Why do the final five need to travel to the 12 colonies? What are they warning them? Are they warning them about the cylons? That makes no scents considering they the humans created them on Kobol to begin with.
2. If the humans created the cylons on Kobol did they create resurrection? And did they purposefully forgot how to create cylons?
In the scriptures they never mentioned the 13th tribe as cylons. It's unfortunate Caprica ended, it was starting to answer some interesting questions.