<prompt> Yakha inguqulo eyinkimbinkimbi yalesi sigwebo Ngemva kweMpi Ye-Opium, ibutho laseBrithani lathatha izincwadi eziningi zomlando nezomlando emtatsheni wezincwadi.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yalesi sigwebo ithi Ngemva kweMpi Ye-Opium, ibutho laseBrithani laphanga amaqoqo amaningi omlando kanye nezwe avela eNdlini, elandelwa ukweba okuvela emasela endawo; ngo-1940, iqoqo lancipha laba ngaphansi kwemiqulu engu-20 000. 