Answer:
The postal clause gave the power to the congress To establish and manage Post Offices and post Roads. In order to give this power, the federal government has to provide the congress with proper funding.
In today's day and age, sending letters through post office is extremely inefficient. You can achieve the same result by using Email which cost you nothing and require much lesser effort.
As for delivery that contain physical goods, Delivery companies that is operated by the private sector tend to do it much more efficiently compared to the government. They can deliver the goods with a much faster time and less rate of damage goods.
Because of this, that Funding can be allocated to other government programs instead. (maybe to health care or public infrastructure)
African Americans had to pay a tax in order to vote. They also had to take a literacy test to see if they could read but they failed it anyway so they could not vote. The Grandfather Clause states that their grandfather could not be slave in order to vote. But slavery had ended a few years back which made most not being a able to vote.
According to "To Kill a Mockingbird," the answer
is found on page 144, at the end of chapter 13, Scout asks Dill why Boo has
never run away. Dill answers and says to her that maybe he has nowhere to go, nobody
to run away to. Who would receive him and also, he doesn't even come out of the
house to start with.