system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why did Germany respect neutral status in WWII?

Just curious why they respected the neutral stance of Switzerland and Spain while obviously not caring for any position of the other countries they blitzkrieged through and occupied during the conflict.
gpt
Spain was in itself fighting a civil war in which the ultra-right group led by General Francisco Franco won.  It would have been seen as another potential ally for the fascists and Nazis.  Hitler and Italy actually provided some minor support to his Nationalists during La guerra civil, which lasted from 1936-1939.  Not only that, but Hitler realized his army was needed elsewhere, and preferred to to focus on lands closest to Germany that he could invade, including lands he felt he had the sufficient upper hand in.  The spaniards would have seen experienced fighting because of the war.  Also transport through the Pyrenees would be difficult, meaning he'd have to assault from Sea or Air.    

Hitler had at one point desired to conquer Switzerland and bring it under the Großdeutsches Reich.  Operation Tennenbaum was the plan developed to eventually invade Switzerland but was postponed the because of more pressing matters AND because it would have been a logistical nightmare to invade Switzerland partially because A. the mountainous terrain would make transport difficult and B. the Swiss population was quickly mobilized in terms of army reserves and supplies to prepare for an invasion.

The military strategy of Blitzkrieg is only successful when you can catch your opponent off guard, it would have been fairly difficult to invade those two countries after seeing Hitler attack Poland, France and the Netherlands.