Trade policy instruments are tools governments use to regulate international trade and protect domestic industries. These include tariffs, non-tariff barriers, and trade agreements. Understanding these instruments is crucial for grasping how countries manage their economic relationships and pursue their national interests. The study of trade policy instruments covers their historical context, types, effects, and economic impact. It also explores current debates and future trends, such as the rise of protectionism, digital trade challenges, and environmental concerns in international trade.