The Thralls are supposed to be the slaves of society and Viking culture had slavery. You could be born into slavery or you could be captured as bounty and they engaged heavily in the slave trade across the world with the Arab world, with the developing Russian world, in Europe, in Northern Africa. So then I guess the god Rig kept going. He came to a modest looking house, got tired, slept between the wife and the husband and then the wife got pregnant nine months later and she gave birth to the second class system which is known as the Carls. These were freedmen and there were some forms of democracy. They had meetings that were called the Thang. How cool is that?