"Blam, you wanna take this one? ;')
Read this book, America BC, by Barry Fell.
Also, the Egyptian mummies have been found to contain both cocaine and nicotine...and, you know where that comes from.
Yeah, we know where that comes from--wild shore leaves.
Street vendors? ;')
sort of related topic:
Tamil Trade
http://www.freerepublic.com/focus/f-chat/1213591/posts