Which detail in trail mail shoes why a speedy mail service was so important to the nation

answer:

the answer is a, "families received bad news too late to , and good news too late to join the celebration".

explanation:

all of the other options don't give details as to why having a faster mail service would . use process of elimination to figure this out.

recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

explanation: