Unfortunately, you did not provide the texts to which the question refers, which makes it impossible for the answer to provide textual evidence. However, I will try to help you in the best possible way.
Answer and Explanation:
How is it possible that the Northern European Planice attracted the first settlers? The answer to this question can be reduced in two words: soil and climate. This is because the colonizers needed to establish themselves in a region where agriculture was possible, the Northern European Planice being a perfect place for this, since the region has an average temperature of 15 ºC being perfect for seasonal agricultural crops. In addition, the region has fertile soil and access to water, making it completely possible to establish agricultural practices on site.
Even not as commonly used for this as the Aztecs, the Mayans used to perform sacrifices on the temples and they were also used as a place of worship. Only a few powerful Mayan kings would perform human sacrifices and they were mostly rulers from other areas.
