The first part is something similar to oral tradition. which is a type of story telling from word of mouth only.
The second part is they could spread there mythology, spiritual and historical understanding with other tribes or the same tribe for generation.
Underlines don't show up here but assuming <span>that this is referring to the same list of options that was posted before with this question, the best option would be "preposition"</span>
A subject is like a topic. A verb is an action or state of something happening.
