*The [[Tokugawa shogunate]] institutes a price floor on rice. Merchants in [[Edo]] must sell rice for no less than one ''[[ryo|ryô]]'' per 1.4 ''[[koku]]'', and in [[Osaka]] no less than 42 ''[[momme]]'' per ''koku''. | *The [[Tokugawa shogunate]] institutes a price floor on rice. Merchants in [[Edo]] must sell rice for no less than one ''[[ryo|ryô]]'' per 1.4 ''[[koku]]'', and in [[Osaka]] no less than 42 ''[[momme]]'' per ''koku''. |