Answer:
Large size means strong economy.
Step-by-step explanation:
The size of the sultan's caravan show that the economy of the Ottoman Empire is very strong because the caravan needs more money during its journey. Larger the caravan, more money will be needed to fulfill the requirements and needs of the journey which can only be done if the economy of the empire is strong. The caravan of sultan is always had large number of people which indicates good economy.