Question

how did germany gain access to and overtake norway, belgium, and the netherlands in wwii?
great britain surrendered to germany giving them access to the allied countries.
japan bombed france and the allied forces retreated to great britain.
soviet soldiers infiltrated the french army and attacked british defenses on the border.
the allied forces defending france retreated after a blitzkrieg attack on dunkirk.

Explanation:

Great Britain did not surrender to Germany during WWII. Japan did not bomb France directly in the context of Germany's access to Norway, Belgium and the Netherlands. There is no such event as Soviet soldiers infiltrating the French army to attack British defenses. The blitzkrieg attack on Dunkirk led to the retreat of Allied forces defending France, which left the way open for Germany to over - take Norway, Belgium and the Netherlands.

Answer:

The Allied forces defending France retreated after a blitzkrieg attack on Dunkirk.