Matthew Perry "bullied" the Japanese into signing a trade treaty, by trading them drugs instead of regular items that they can acctually use, the british people traded a sort of drug called "opium" for tea. opium is a type of herione.
it is made of a pesial type of poppy seeds, and they are boiled until a type of gooey stuff comes out of it. ( then the smoke it till they get high. )
so then they got addicted to the drug and kept on trading all their tea.