Slavery has historically led to diverse ethnicities in societies due to the intermixing of different ethnic groups through rape of slaves. This has resulted in a region's ethnicity carrying more significance in a slave state compared to the West, which has been influenced by white supremacist ideologies and national origin myths.
This show picks up where Dan's Thor's Angels show left off. In the early Middle Ages Pagan Germanic-language speakers like the Vikings are a dying breed. Many of their contemporaries wish they'd die faster.