Subsidies: Protect infant industries, safeguard domestic employment, encourage R&D, but can lead to inefficient resource allocation, trade disputes, and require public funds
Tariff Barriers: Can provide revenue, protect domestic industries, but can provoke trade wars, hurt domestic consumers, and decline export competitiveness
Import Quotas: Protect domestic industries, reduce trade deficits, but can cause shortages, higher prices, and corruption
Anti-Dumping Policies: Protect domestic industries, ensure fair competition, but determining dumping is difficult, may be used for protectionism, and can provoke retaliation