Khan's empire did not unify the Chinese provinces.
Explanation:
Ghengis Khan was an Emperor who ruled over Mongolia, and he's the grandfather of Kublai Khan. However, during his reign, he conquered many areas in northern China olnly. This is in contrast to Kublai Khan, who was widely considered as the first Mongol to rule the whole of China when he overcame the remaining Song loyalists. This was accomplished around 1279.
Hence, the correct answer is Khan's (, Ghengis khan) empire did not unify the Chinese provinces.
Railroads had an impact to increase transportation throughout the country. It made it more easier to get to other cities or states depending on which railway you were going.
