I believe your answer is B. people speaking their ideas against government in writing (sorry if I'm wrong)
•Germany under the fascist regime of Adolf Hitler
•Germany being increasingly hostile and thinking anyone who isn’t if the Aryan race was subhuman
•Germany declaring war and attacking Poland for land in Sept. 1st, 1939.
•France and The UK already had hostilities to Germany before the war are rivalries and the political tensions just sped things up.
It is germs any type of germs
hope this helps
Because Belgium was the country in which the Nazis had to march through in order to get to France another way.