I guess the correct answer is import quotas.
During the past five years, the nation of Andolvia began a massive undertaking: teaching farmers how to successfully grow and harvest peanuts. The government subsidized the building of peanut processing plants, where private businesses are now producing peanut butter and other products of nutritional value. Although the Andolvia governmenthas not completely banned the importation of peanuts, it has placed import quotas on the number of peanut products that the nation can import each year, in order to protect Andolvia’s young peanut industry