Why was revealing the secret of making silk punishable by death?

The idea that desirable traits can be bred into human beings and undesirable ones can be bred out is known as:

14) the most likely reason general william t. sherman wanted to control the rail lines running through atlanta, georgia, during his "atlanta campaign" was because he wanted to a) prevent residents of the city from fleeing to the north. b) cut off the flow of supplies to the confederate army. c) use the rail lines to quickly transport his troops. d) extend the rail lines into the northern states. eliminate

Which statement describes a major advantage of a unitary system of government over a confederal system