Original sentence: As such, Norse paganism is a subset of Germanic paganism, which was practiced in lands inhabited by Germanic tribes across most of northern and central Europe until the end of the Viking Age.Our knowledge of Norse paganism is mostly drawn from the results of archaeological field work and early written materials
Edited sentence: As such, Norse paganism is a subset of Germanic paganism, which was practiced in lands inhabited by Germanic tribes across most of northern and central Europe during and before the Viking Age.that are supported by archaeology findings and early written materials