All files here have a creative common license

1546923312_7cc94957e8_o.jpg
From https://www.flickr.com/photos/9518198@N04/1546923312

Europa21_-_2.jpg and diallo224.jpg
From https://commons.wikimedia.org/wiki/File:Europa21_-_2.jpg

dknuth.jpg and knuth224.jpg
From https://commons.wikimedia.org/wiki/File:KnuthAtOpenContentAlliance.jpg



pexels-artem-podrez-5725953.mp4
A Group of Young Professionals are Having a Teamwork
Uploaded at October 28, 2020
https://www.pexels.com/video/a-group-of-young-professionals-are-having-a-teamwork-5725953/
author : https://www.pexels.com/@artempodrez

1328360239_e56cc26d26_o.jpg
obtained from flickr https://flic.kr/p/32ocdK
Author: https://www.flickr.com/photos/goblogk/
License: CC BY-NC-ND 2.0


800px-India_(236650352).jpg
obtained from wikimedia https://commons.wikimedia.org/wiki/File:India_(236650352).jpg
Author : Steve Evans: https://www.flickr.com/people/64749744@N00
license: Attribution 2.0 Generic (CC BY 2.0)

konrad-preis-21.mp4
Public domain license CC0 obtained from https://vimeo.com/638315062