If the value of the gift exceeds $100, you will be required to pay duty. If you have goods you intend to sell in the U.S., they will most likely be subject to duty, unless they are eligible for duty-free treatment under an international trade agreement (GSP, NAFTA, etc.).
Specialization of labor is a powerful force in an economy, benefiting small and large businesses alike. Workers produce more when they occupy specialized roles, so businesses can offer higher quality products at lower prices.
Specialization. In economics, the term specialization refers to people, companies or countries focusing on providing a single good or service, instead of a range of different goods or goods and services in a particular area as opposed to a large one so that they can increase their efficiency and profit.