A: The maximum amount that a person can contribute to his Roth 401(k) for the calendar year 2015 is $18,000, or $24,000 for those over age 50.his means an investor under age 50 can invest $10,000 in a Roth 401(k) and $8,000 in a traditional 401(k) and vice versa.
Definition of free trade. : trade based on the unrestricted international exchange of goods with tariffs used only as a source of revenue.
International trade. International trade is the exchange of capital, goods, and services across international borders or territories. It is the exchange of goods and services among nations of the world.[1] In most countries, such trade represents a significant share of gross domestic product (GDP).