Which among the following was the single biggest item of import to the Vijayanagar empire?

Q. Which among the following was the single biggest item of import to the Vijayanagar empire?
Answer: Horses
Notes: Kings of Vijayanagar, imported Arabian horses on a large scale, in order to improve the breed of cavalry horses in their own districts. Thus, the single biggest item of import to the Vijayanagar empire was Horses.