Respuesta :

well, one of the effect was the british smuggled a ton of amount of Opium into China and got a lot of its population hooked.
This raged the emperor of China to the point where he declared a war against the Biritsh army known as the opium war

hope this helps
evangelinacort

For E2020 the answer would be the last option.  (Both imports and exports increased.) Hope this helps :)