•Since currencies in different countries have always differed, salt was an international currency: it was an important trading commodity carried by explorers
•Salt was traditionally expensive, and thus used to bestow social standing.
•necessity of salt has subjected it to governmental monopoly and special taxes
This is the extra information for salt. :D
And Brindha, I think I got your worksheet. I found it on my table and i asked around but nobody claimed it so it's in my locker. You can take it back on monday. :)