The answer is C principles that restrict the extent of something.
If you mean neutral countries Switzerland, Portugal and the Vatican(Holy See) would be a few
I believe they’re referring to the Tuskegee Airmen. Here a link to an article about them https://www.google.com/amp/s/www.history.com/.amp/topics/world-war-ii/tuskegee-airmen
Answer: The answer would be A Price rises
Explanation: When demand exceeds supply the price will rise
Any options? A reason US joined the war was because German subs destroyed lusitania which had Americans on it. That's one of the main reasons we joined the war, if that's a option for your question then that's it.
If that is not a option let me know and i can further assist
