The Koryo Dynasty, also known as the Goryeo Dynasty, was a time of great advancements for its time. In categories such as literature, government, education, and agricultural reforms. King Taejo, the founder of the Koryo Dynasty who reigned from 877-943, made a lot of these advancements happen. Soon after the establish of the Dynasty, land became the key to power and wealth. And you could only obtain it by blood. Which in turn created social classes. Education took a turn for the better and practically sky rocketed. Within a couple of years many universities and local schools were built.