Reinickendorf was created in 1920 by the Greater Berlin Act, and was not changed in the borough reforms of 2001.

Originally an independent city, it became part of Berlin in 1920 in the Greater Berlin Act.

It merged into Berlin with the Greater Berlin Act in 1920.

The Greater Berlin Act in 1920 incorporated many suburbs and surrounding cities of Berlin.

It was finally incorporated by the Greater Berlin Act of 1920.

In 1920 they merged into Berlin with the "Greater Berlin Act".

The spike in population in 1920 is a result of the Greater Berlin Act.

The district ceased to exist as an administrational unit in 1920 with the Greater Berlin Act.

In 1920 it merged in the city of Berlin with the Greater Berlin Act.

Upon the city's incorporation according to the 1920 Greater Berlin Act, the building became the administrative seat of the Charlottenburg borough.