What is one example of a closed economy?

a restricted system that blocks trade with international partners

Explanation:

edge 2021

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

it was a act of seld fesnse more over it was a peace treaty between the fogein contunries.