Write a small discussion about the following description:
Even if they know the benefit, countries inhibit free trade. They use different arguments to restrict free trade. Some of the tools used by the governments are tariff, quota export subsidy and others. The question is then if free trade is beneficial, why do governments inhibit trade? What is tariff? What is quota? Discuss some of the differences between tariffs and quotas? Discuss some of the conditions under which tariffs and quotas can be justified? Is it possible for a low nominal tariff rate to understate the effective rate of protection? What is tariff Escalation? What is the intent of offshore assembly provision (OAP)? What are the intent and impact of "domestic content requirements"?