Complex sentence: The utopia could not be developed, due to the harshness of the wild environment and the colonials that stayed all too soon forgot the original'Aryan' ideals of its founders and ended up integrating totally to the Paraguayan culture.
Split into simpler sentences: The utopia could not be developed due to the harshness of the wild environment. The colonials that stayed soon had forgotten the original'Aryan' ideals of its founders and ended up integrating totally to the Paraguayan culture.