Timeline Monday 20 September 1875

Events on Monday 20 September 1875 1

• 1875 Ganghwa Island incident Japanese warship clashes with Korean forts, forcing Korea open The Japanese warship Unyo provoked an exchange of fire with Korean coastal batteries near Ganghwa Island, killing dozens of Korean defenders. The incident became Japan's pretext for the Treaty of Ganghwa the following year, which opened Korea to Japanese trade.