How do medieval trade routes compare to the boundaries of the modern islamic world?

What did kublai khan learn from the chinese advisers he consulted?

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal

How did the treaty of versailles cripple germany after world war one ?