Read the excerpt from chapter 8 of The Travels of Marco Polo . This province produces great quantities of excellent white incense, and also dates in great abundance. No grain is grown here except rice, and not much of that; but it is imported from abroad at a big profit. Fish is plentiful, notably tunnies of large size, which are so abundant that two of them can be bought for a Venetian groat. The staple diet consists of rice, meat, and fish. What is the author’s reason for writing this text?