posthistory

post- +‎ history.

posthistory (countable and uncountable, plural posthistories)

1. The history of events that occur after (and are consequences of) an event (e.g. a crisis, a reconciliation, etc).
   • 1987, Principles of Catholic Theology →ISBN, page 207:

     The Christmas messages of Pope and Patriarch on the holy night of 1965 are the first documents in the posthistory of that day.

2. The history after the end of human developments.

• prehistory