What does it mean when someone say: at sign LEAVE

It means "There's the exit. Leave me t.f alone"

Explanation:

Basically indicating someone doesn't want to deal with you rn and just leave them be.

answer; negative punishment;

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.