Nonporous ceramic (glazed earthenware, stoneware and porcelain) has the advantage that it doesn't absorb water and today it's vastly predominant.
Since pottery manufacturing started with earthenware biscuit (non-glazed and therefore porous earthenware), my question is: when did nonporous ceramic become widespread or dominant? (i.e. used more than earthenware biscuit).
Switching from pottery that's not usable for holding liquids to pottery that is good for that looks like an important point in history to me.
Widespread is a relative term but I think it is possible to build a consensus about what widespread use of a certain object in history means (e.g. the Bronze Age is characterized by widespread use of bronze).