The Chinese kept silk production a secret because it was very important to their culture and economy for thousands of years.
The correct answer is individualism.
In the individualist society, everybody puts themselves and their own needs first, and then the others come second. Personal success is very important for such people, and the others aren't as relevant in their lives as in collectivist societies, for example.
Prior to the Industrial Revolution, which began in Britain in the late 1700s, manufacturing was often done in people's homes, using hand tools or basic machines. Industrialization marked a shift to powered, special-purpose machinery, factories and mass production.
