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:

Germany used blitzkrieg tactics. The Allied forces defending France retreated after the blitzkrieg attack on Dunkirk, which allowed Germany to gain access to and overtake Norway, Belgium, and the Netherlands. Great Britain did not surrender to Germany in a way that directly gave access to these countries. Japan's actions were mainly in the Pacific - not directly related to Germany's access to these European countries. There is no truth to the claim about Soviet soldiers infiltrating the French army.

Answer:

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