Write a word/term/phrase for the following sentence

1. The market for the commodities which are produced in one country and sold in another countries.
Ans:- International Markert

2. Type of market where durable commodities that are generally non-perishable in nature are sold.
Ans:- Long-period market

3. The market where goods are sold to the ultimate consumers or the users of the product.
Ans:- Retail Market

4. Two sellers, selling either a homogeneous product or a differentiated product.
Ans:- Duopoly