It is hereby certified that Nikos Psyllas has successfully attended and completed the course: Hist3.1: World History 1: Man facing Nature

which is offered by Mathesis MOOCs, developed in Crete University Press of the Foundation for Research and Technology - Hellas, with the lecturer Mrs Maria Efthymiou, professor at the University of Athens.

The duration of the course was four weeks —19/4/2021 until 28/4/2021 and from 6/5/2021 until 23/5/2021— with an estimated study time of 20 hours needed to complete the course. This course is offered via the platform OpenEdX/gr of Mathesis in compliance with all established technical and educational specifications. The assessment procedure is based on the honour code by which the participants commit to abide. The responsibility for the content of the course and its assessment lies exclusively with the lecturer.