In which type of market would you find it the most difficult to buy goods from another country?

The correct answer is closed economy.

A closed economy is a system in which a country has no trade activities with outside economics.

The closed economy is self-sufficient and the customers are provided with goods produced exclusively in their own country, there is no export nor import.

Today, there are no countries with closed economies only. To be a totally closed one, the nation would heave to be self-sufficient in everything, starting with raw material and resources for producing goods and finishing with enough qualified human labor.

Some economies are semi-closed with some economic activities limited by trade barriers, quotas and tariffs.

b)

it created free trade throughout the colonial territories.

(d) take jobs from american workers.