Explanation: The Banjaras were the most important trader-nomads. Their caravan was called tanda.

• Sultan Alauddin Khalji used the Banjaras to transport grain to the city markets.
• Emperor Jahangir wrote in his memoirs that the Banjaras carried grain on their bullocks from different areas and sold it in towns.
• They transported food grain for the Mughal army during military campaigns. With a large army there could be 100,000 bullocks carrying grain.

Source: NCERT