Answer:
The benefit of waiting to the end of the speech to ask the congress to declare a state of war was as a result of his need to enumerate all points which would point favourably towards the declaration of the war.
He knew that, making his request directly might likely led to being turned down while putting his reasons bare during the speech would grant him more grounds on why the war is a necessity.
Explanation:
If the broadcast was not just spoken in English sop that other races would understand like have a Sentance of it in English and a Sentance of it in German,Russian,Swedish,Jappinese would make it so that everyone would of under stood the broadcast thats would your best answer
