I think it should be because diplomats is the representative of a nation and negotiating with other nations could be more easier if we're already friendly with the diplomat. Also the way we treat their diplomat is also the way of how we treat the nation he/she representing and it would add a good standing in the global status if we are respecting the diplomats.
They were all slave states that had remained in the Union and this is what Missouri, Kentucky, Maryland and Delaware had in common during the Civil war. The correct option among all the options that are given in the question is the second option. I hope that this is the answer you were looking for and it helped you.
The answer is letter A. "<span>An air battle above the English Channel to prepare for an invasion of Britain"</span> It was an aerial battle as the Germans sent their air force to drop bombs on Britain. Many civilians lost their lives and various buildings were destroyed but thanks to the leadership of British Prime Minister Winston Churchill, the British people withstood the bombardment and the Royal Air Force fought back with U.S. support preventing Germany from conquering Britain.
I’m gonna search and check rite now
From somerhing, like anyyhung (: