The way in which a student could justify inferring that "indigenous" means "originating in a particular region" is by explaining what the origin of the word is. <em>"in+gen" </em>comes from Latin and means "to originate" (like <em>generate</em>). The suffix<em> "-ous,"</em> on the other hand, is used in English to transform a word into an adjective, and it has the meaning of "possessing the quality of."
The detail that is essential to Churchill’s argument that countries should not remain neutral in the war is: A. “French and British Armies might well at the outset have saved not only Belgium but perhaps even Poland” since Churchill stated that the French and British saved Belgium during WW2 after it was attacked.