I have a basic idea about the Schieffen plan and I know that Germany attacked Belgium in the First world war. But I am slightly confused about this topic, as despite the fact that the schieffen plan did involve taking the French by Surprise, a proposal with Belgium to let the German troops pass would’ve been a lot faster and would’ve meant less blood-shed and gore. This raises the chance that Germany, may instead have been trying a country expansion or a conquest just like they did with Alsace and Lorraine. There is one other chance, which is whether Germany attacked Belgium because they had a treaty with Britain where if they were attacked Britain would step in (Britain were in the triple entente). So, I was just wondering which of this is the most likely reason as to why Germany chose to attack neutral Belgium?
The Germans in fact made such a request. Of course the word "request" in this context should really have irony quotes, considering the disparity in power between the two countries, and the fact that Germany was not going to take "no" for an answer.
So bascially the Germans attacked because attacking France through Belgian territory was The Plan, and the Belgians refused to just let them walk through unopposed.