Answer to Question 1
Gross Domestic product is the value of final goods and services produced within the United States. In contrast, gross national product is the value of final goods and services produced by residents of the United States, regardless if the production takes place in the United States. GNP would include the production from a Ford Plant located in France. GDP would include production from a Honda plant located in Ohio.
Answer to Question 2
An oligopoly market will produce an output level that is lower than would be produced by a perfectly competitive market. The price of the product will be higher in the oligopoly market than it would be under perfect competition.