What can be happening in an agora?

the agora was an open tree lined square surrounded by columned buildings. It was both a commercial and political centre. Athenian men spent much of their days in the agora where a wide variety of...

The Agora is a Part of an Ancient Greek city. :3

When human populations become too dense and adverse the plants start to excrete nerve toxins killing millions.

It's up to you to find out.

A happening is something that happens, an event. This term was used in the 1960's and 1970's to mean a seemingly spontaneous or artistic or musical or otherwise unusual or interesting event that...