For ten points, name this alphabet whose creation was commissioned by Sejong the Great and is used to write Korean.
This alphabet is used to write the Cia-Cia language, which is spoken in a chain of islands off Sulawesi. This alphabet is also known by a term that translates as "writing one can learn in a morning", and one (*)  reformer of this alphabet brutally suppressed a general strike on his country's largest island. This alphabet is transliterated using the McCune-Reischauer system, and was banned under a cultural assimilation policy before the outbreak of World War II. This alphabet is known by two different names in the two countries in which it is official, and was created by the Scholars of the Jade Hall. For ten points, name this alphabet whose creation was commissioned by Sejong the Great and is used to write Korean.
This alphabet is used to write the Cia-Cia language, which is spoken in a chain of islands off Sulawesi.
Hangul