Why did the relationship with the danes and frisians degrade over time beowulf tyhe book?

The relationship between the Danes and the Frisians deteriorated over time in "Beowulf" due to power struggles, conflicts over land and resources, and various acts of aggression and retaliation. As the two groups competed for dominance and control, tensions escalated, leading to violent confrontations, betrayals, and feuds that contributed to the breakdown of their once cordial relationship.