<P> Korea's first unequal treaty was not with the West but with Japan . Taking a page from Western tactics, in 1875 Japan sent Captain Inoue Yoshika and the warship Un'yō to display military might over Korea in the Ganghwa Island incident . This forced Korea to open its doors to Japan by signing the Japan--Korea Treaty of 1876 . </P> <P> The unequal treaties ended at various times for the countries involved . Japan's victories in the 1894--95 First Sino - Japanese War convinced many in the West that unequal treaties could no longer be enforced on Japan . Korea's unequal treaties with European states became largely null and void in 1910, when it was annexed by Japan . </P> <Table> <Tr> <Th_colspan="2"> Treaty </Th> <Th> Year </Th> <Th> Imposer </Th> </Tr> <Tr> <Th> English name </Th> <Th> Chinese name </Th> </Tr> <Tr> <Td> Treaty of Nanking </Td> <Td> 南京 條約 </Td> <Td> 1842 </Td> <Td> British Empire </Td> </Tr> <Tr> <Td> Treaty of the Bogue </Td> <Td> 虎門 條約 </Td> <Td> 1843 </Td> <Td> British Empire </Td> </Tr> <Tr> <Td> Treaty of Wanghia </Td> <Td> 中 美 望 廈 條約 </Td> <Td> 1844 </Td> <Td> United States </Td> </Tr> <Tr> <Td> Treaty of Whampoa </Td> <Td> 黃埔 條約 </Td> <Td> 1844 </Td> <Td> French colonial empire </Td> </Tr> <Tr> <Td> Treaty of Canton </Td> <Td> 中 瑞 廣州 條約 </Td> <Td> 1847 </Td> <Td> United Kingdoms of Sweden and Norway </Td> </Tr> <Tr> <Td> Treaty of Kulja </Td> <Td> 中 俄 伊犁 塔 爾 巴 哈 台 通商 章程 </Td> <Td> 1851 </Td> <Td> Russian Empire </Td> </Tr> <Tr> <Td> Treaty of Aigun </Td> <Td> 璦 琿 條約 </Td> <Td> 1858 </Td> <Td> Russian Empire </Td> </Tr> <Tr> <Td> Treaty of Tientsin </Td> <Td> 天津 條約 </Td> <Td> 1858 </Td> <Td> French colonial empire, British Empire, Russian Empire, United States </Td> </Tr> <Tr> <Td> Convention of Peking </Td> <Td> 北京 條約 </Td> <Td> 1860 </Td> <Td> British Empire, French colonial empire, Russian Empire </Td> </Tr> <Tr> <Td> Chefoo Convention </Td> <Td> 煙台 條約 </Td> <Td> 1876 </Td> <Td> British Empire </Td> </Tr> <Tr> <Td> Treaty of Saint Petersburg </Td> <Td> 伊犁 條約 </Td> <Td> 1881 </Td> <Td> Russian Empire </Td> </Tr> <Tr> <Td> Treaty of Tientsin (1885) </Td> <Td> 中 法 新約 </Td> <Td> 1885 </Td> <Td> French colonial empire </Td> </Tr> <Tr> <Td> Sino - Portuguese Treaty of Peking </Td> <Td> 中 葡 北京 條約 </Td> <Td> 1887 </Td> <Td> Kingdom of Portugal </Td> </Tr> <Tr> <Td> Treaty of Shimonoseki (Treaty of Maguan) </Td> <Td> 馬 關 條約 </Td> <Td> 1895 </Td> <Td> Empire of Japan </Td> </Tr> <Tr> <Td> Li - Lobanov Treaty </Td> <Td> 中 俄 密约 </Td> <Td> 1896 </Td> <Td> Russian Empire </Td> </Tr> <Tr> <Td> Convention for the Extension of Hong Kong Territory </Td> <Td> 展 拓 香港 界 址 專 條 </Td> <Td> 1898 </Td> <Td> British Empire </Td> </Tr> <Tr> <Td> Treaty of Kwangchow Wan (fr) </Td> <Td> 廣州 灣 租界 條約 </Td> <Td> 1899 </Td> <Td> French colonial empire </Td> </Tr> <Tr> <Td> Boxer Protocol </Td> <Td> 辛 丑 條約 </Td> <Td> 1901 </Td> <Td> British Empire, United States, Empire of Japan, Russian Empire, French colonial empire, German Empire, Kingdom of Italy, Austro - Hungarian Empire, Kingdom of Belgium, Kingdom of Spain, Kingdom of the Netherlands </Td> </Tr> <Tr> <Td> Simla Accord </Td> <Td> 西 姆 拉 條約 </Td> <Td> 1914 </Td> <Td> British Empire </Td> </Tr> <Tr> <Td> Twenty - One Demands </Td> <Td> 二 十 一 條 </Td> <Td> 1915 </Td> <Td> Empire of Japan </Td> </Tr> <Tr> <Td> Tanggu Truce </Td> <Td> 塘沽 協定 </Td> <Td> 1933 </Td> <Td> Empire of Japan </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Treaty </Th> <Th> Year </Th> <Th> Imposer </Th> </Tr>

What were the key elements of treaty systems imposed on china and japan between 1840 and 1860