As an Ancient History Toast was invented as a safety measure

This is another good fact that I came to know via Twitter..

As we know in Ancient time , building empires was among the most important thing. thus politics and murders were part of life... Poison was best murder weapon at that time..

So, Toast was invented to reassure that drinks are not with poison. In this gesture guest and host was toasting glass of wine and during this liquid or wine will spit in each others cup .. & this ensures that there is not any poison in given drink.  because if there was any poison person would become reluctant to toast as during toast poison will come in its cup also..

I really liked this one :)