Based on the last two paragraphs of o pioneers what can be inferred about the relationship between alexandra bergson and carl linstrum

Based on the final two paragraphs of O Pioneers! we can in infer that Alexandra and Carl marry and spend the rest of their lives together.

Theirs is not a conventional marriage based on romantic love, because of Alexandra's true connection to the land. However, by marrying the two can avoid being lonely and can work together.