What is "easterners"

n. (plural of easterner English)

The Easterners ( Korean: Dongin, Hangul: 동인, Hanja: 東人, literally East people) were a political faction of the Joseon Dynasty. This faction appeared during the reign of Seonjo of Joseon in sixteenth century Korea. Originating from friends of Kim Hyowon, they soon encompassed most of the disciples of Jo Sik and Yi Hwang, conflicting with Yi I and his followers, who formed the core of the Westerners. Though emerging as the dominant faction in the 1580s, it nearly collapsed at the suicide of Jeong Yeorip and the succeeding bloodshed in 1589. After Westerner Jeong Cheol was exiled for attempting to make Prince Gwanghae the Crown Prince, the Easterners divided into Northerners and Southerners.