Step 1: Availability of valuable goods.
India produced valuable goods like spices (pepper, cinnamon), ivory, gemstones, and textiles, which were in high demand in foreign markets.
Step 2: Demand for imported goods.
India also imported goods such as gold, silver, wine, and glassware, increasing trade exchanges.
Step 3: Well-developed trade networks.
The presence of ports, rivers, and market towns facilitated international trade with regions like the Roman Empire.
Step 4: Conclusion.
Thus, the exchange of diverse goods and strong trade networks led to large-scale trade between India and other countries.
Two statements are given below as Assertion and Reason (R). Read them carefully and choose the correct option.
Assertion : Harappa was a well-planned city.
Reason (R): It had a well-planned drainage system.
Match Column-I with Column-II and choose the correct option: 
Identify the ancient Indian text with the help of the following information: