There would be a trader and then you could click on him/her and trade resources with him( you could also make at auto trade so if you have specific amount of on thing you'll sell some of it and buy another thing) ( in this way you could trade online) 
#traders
sage siren
The bread emoji is important
blazing plinth
Lovely idea ❤️
if you check 4 one " competition " you can see jon has already thought about the idea trading
sage siren
Oh nice to know