The Great Patriots' War, which occurred in the late 19th century, significantly impacted Japan's expansion by solidifying its imperial aspirations. The conflict, primarily between Japan and China (1894-1895), showcased Japan's military modernization and capabilities, resulting in a decisive victory for the Japanese. Following the war, Japan secured territorial gains, including Taiwan and the Pescadores Islands, significantly enhancing its influence in East Asia. This conflict marked Japan's emergence as a formidable power and laid the groundwork for its further imperial expansion in the decades to come, culminating in aggressive policies leading to its involvement in World War II. The war fostered Japanese nationalism and ambitions for regional dominance.