Sui


 * At the end of the Northern and Southern Dynasties (386 - 589), the whole nation had undergone a long period of division
 * People who had endured sufferings of war were longing for the unification but neither the Northern Dynasties nor Southern Dynasties realized this goal.
 * The emperor Yang was known for spending way to much money and treating his people cruely.
 * the emperor Yang led to the down fall of the Sui dynasty because he spent too much money on hiring laboreres (he hired over 2 million workers)
 * They attacked Korea four times and each time they were defeated.
 * Peasants were forced to leave their farmland to fight in the wars against Korea, so there was later a famine which left the country in extreme misery
 * This Dynasty had a very short lifetime, hence it didn't accomplish as much as the sung dynasty