What were some of the new products or items that Marco Polo discovered during his trip along to Silk Road to China?

Answer 1

Marco Polo did not really discover anything during his travels. Many historians today have concluded that he very probably never went to China at all, but that he met a lot of tradesmen from the Far East in the trading station on the Black Sea that was run by his family. In all probability he remembered the stories about China that they told him and years later told them as if he had been there himself. The Chinese kept good records - they would have taken notice if it concerned someone who was by his own account a trusted high officer of Kublai Khan - but not a single mention of him can be found in any Chinese records.

Answer 2

When he returned after 25 years in China he had gun powder, silks, spices, and perfumes. He basically traded and had brought back goods