Bonsoir,
Solution : mettre des virgules ! => Last century’s totalitarianisms, determined to manipulate the population as a whole, outwitted these systems by systematically erasing EVERY existing FORM OF MEMORY.
Undoubtedly THE FORMER <=( les premiers cités, les totalitarismes) succeedED IN RUINING some traces OF THE PAST.
To some extent both THE USSR and China have recreated their own HIstory with lies, BY<=(au moyen de/par/en) retouching photographs so as to FAKE (0) reality.
* A
présent tes phrases ont du sens.
Attention à la place de l'adjectif épithète, à l'omission de "the", à la
préposition employée après succeed, à l'utilisation du dictionnaire bilingue (maquiller la vérité = to fake the truth <=> maquiller son visage = to make up one's face)