Nullification Crisis: This refers to the political conflict between President Andrew Jackson and Southern states, particularly South Carolina, over their belief that they had the right to nullify or reject federal laws they deemed unconstitutional.
Protective Tariff: A protective tariff is a specific type of tariff act that aims to shield domestic industries from foreign competition by making imported goods more expensive.
Free Trade: Free trade refers to an economic policy where there are minimal or no barriers such as tariffs or quotas on international trade, allowing goods and services to flow freely between countries.