Final answer:
Nazi troops did not specifically hide prior to their attack on Norway; they quickly mobilized and launched invasions of Denmark and Norway in April 1940 to gain control of important resources and secure strategic positions.
Step-by-step explanation:
The Nazi troops staged their attack on Norway during the phase of the Second World War known as the phony war, which ended in April of 1940. Prior to their attack, they did not specifically "hide" in a particular location, but rather mobilized and launched a swift invasion of both Denmark and Norway. The primary objective was to control the iron ore trade from Sweden and to secure the shipping lanes into and out of the Baltic Sea. Alongside this military action, Denmark was also overtaken with minimal resistance on the same day. By June 1940, both Denmark and Norway had fallen to Nazi Germany.
This strategic move was part of a larger plan to prevent a British naval blockade, which had been a significant factor in Germany's defeat in World War I. The German advance then continued with the invasion of the Netherlands, Belgium, and Luxembourg, exploiting weaknesses in the Allied defenses and bypassing the French Maginot Line by attacking through areas thought impassable.