Below you can find the The 1842 treaty that ended the opium war & ceded hong kong to britain was signed in this city Jeopardy Words Answer. The answer to The 1842 treaty that ended the opium war & ceded hong kong to britain was signed in this city has 7 letters. This clue belongs to the History category and is part of Jeopardy Word Level 2067. If you scroll near the bottom you will find other clues and answers part of level 2067