Protectionism - a policy of protecting the domestic market from foreign competition through certain restrictions, such as the introduction of import and export duties, subsidies and other measures. On the one hand, it contributes to the development of national production. In economic theory, the protectionist doctrine is the opposite doctrine of free trade - free trade. Supporters of free trade protectionism criticized from the standpoint of growth of national output, employment and population dynamics. Opponents criticized the protectionism it from the standpoint of freedom of enterprise and consumer protection.