The navigation act required them to trade
X would equal to nine, the work is below. Hope this helped!
The trips of Marco Polo, also known as the book of wanders or the book of the million, is the title with which the travel book of the Venetian merchant Marco Polo, known in Italy as Il Milione (the million), is usually translated into Spanish.
Thee work is divided into four books. The first describes the lands of the Middle East and Central Asia that Marco Polo crossed on his trip to China. The second book talks about China and the court of Kublai Khan. The third describes several coastal regions of the east Japan, India, Sri Lanka and southeast Asia, as well as the east cost of Africa. The fourth book deals with the wars that the mongols held shortly before, and also describes some regions much further north, such as Russia.
I think it is A B and C, but I am not completely sure, it might be B, C, and D.
