The difference between the purchase with a debit card and the purchase with a credit card lies in the way of financing the amount to be paid. Thus, in the purchase with a debit card, the money with which the purchased good or service is paid is immediately withdrawn from the bank account of the cardholder, with which the debit card works as a cash payment but without use paper money. On the other hand, when paying with a credit card, said amount is not subtracted from the account, but instead a debt is taken with the bank, which must be paid after a certain period.
To protect its local industries and jobs. Placing trade barriers restricts cheaper goods and service that may out-compete those of the local market if allowed to freely compete in the local market.
To protect its population when it feels that the foreign products or services do not meet its national standards and that the goods/services may be harmful for its local population as a measure of national security.
Trade barrier and tariffs are also used as a form of diplomacy. Trade barriers are imposed on good and services from a country that a nation considers hostile.