Why did the chinese keep the silk and porcelain making processes secret

Why might the spanish government have approved of the encomienda system? a the system allowed for fair treatment of all under it, leading to a happy and prosperous colony. b the system used natives as slaves which meant the government was able to maximize their profit of exported goods. c the system allowed for mostly profitable trade within the different colonies. d the system was a great example of how to successfully run a colony, making spain a world power.

The invasion of europe began in the country of ° france ° germany ° belgium

What does the fcc regulate? food and beverage products communications infrastructure environmental policies businesses breaking security laws