How did the Germanic kingdoms form after the western half of the Empire collapsed?

After the collapse of the Western Roman Empire in the late 5th century, various Germanic tribes, such as the Visigoths, Ostrogoths, and Franks, began to settle in former Roman territories. These tribes established their own kingdoms, often blending Roman administrative practices with their tribal customs. The power vacuum left by the disintegration of Roman authority allowed these groups to assert control over regions in Europe, leading to the formation of distinct Germanic kingdoms that laid the foundation for modern European states. The process was marked by conflict, migration, and the gradual integration of Roman culture into Germanic societies.