Chôxen (朝鮮) is a former colony of Japan, covering the Korean peninsula. It was Japan's first overseas conquest. The first troops arrived in 1592, and within a few years had overrun the entire kingdom. It was divided into several provinces (kuni) governed by various daimyô. Chôxen was initially governed by a kind of governor-general, Katô Kiyomasa. That office was later abolished, and it was governed as simply a region of Japan.