 Also, during the time of King Seonjo just before the Japanese invasions of Korea, the political parties had been divided between East and West.The Eastern Party gradually split up into two parties called the Northern and Southern Parties.In January 1624, the Western Party, recently unsatisfied with the success of Lee Gwal (who was part of the Northern Party), made a petition to the King stating that Lee-Gwal and some members of the Northern Party were planning a rebellion.