Explanation:
The author means that even though Japan has a larger trading system (I assume that is what it's referring to) it does not exactly fit the same terms as a usual trading system would.
I believe restrictions on the government activity.
Answer:
During the Mediaeval period, a large number of foreign travellers such as Ibn Battutah, Marco Polo, Alberuni etc visited India and have left an account of their observations.It is through these accounts that we have come to know about India in that period. Such accounts by foreign travellers are known as travelogues.
