Berlin Wall Monument (Chicago) described the effects of the wall and its ultimate fall by arguing that "It became the landmark that symbolized the Cold War… the Berlin Wall also left a lasting impression on the psyche of the German people". She further argues that The Berlin Wall "provides a salient and powerful example of how material culture intersects with knowledge production in the psychological sciences". Since the fall of the Berlin Wall on 9 November 1989, fragments of the Berlin Wall have been donated to various cities in the world. Chicago was offered a piece of the wall in 2008 by the German
Berlin Wall of the Wall; the governments later used industrial equipment to remove most of what was left. The "fall of the Berlin Wall" paved the way for German reunification, which formally took place on 3 October 1990. After the end of World War II in Europe, what remained of pre-war Germany west of the Oder-Neisse line was divided into four occupation zones (as per the Potsdam Agreement), each one controlled by one of the four occupying Allied powers: the United States, the United Kingdom, France and the Soviet Union. The capital of Berlin, as the seat of the Allied Control Council,