the orpeate phrase in my question would be "that spurs the economy". So go ahead a convince me that delivering the mail, building roads, etc. spurs the economy.
Seriously?
How the mail spurs the economy. You might of heard of a tiny company called "Ebay" that relies heavily on the postal service working. Its somewaht of a descendant of a tiny company that used to put out catalogs that you could order from...you might have heard of them as well "Sears".
As for roads...well gee, I don't know. I mean being able to get goods from all across the country might spur the economy just a little bit. Just as being able to travel spurs the economy, as does being able to live outside where one is working.