The building of temples and great cities without modern machinery, using astronomy to predict astrological cycles and plant crops and using their language to communicate and measure time are some of the Mayans most notable achievements.<span> During a 600-year period of time, which was from 300 A.D. until 900 A.D., the Mayans made many great achievements in science, communications, engineering and agriculture</span>
could be wrong but i believe the answer is the theories of Social Darwinism were often used to justify the efforts of certain political, social, or economic views.
Many considered Louis XVI to be ineffectual mainly because of the fact that the revolution had already taken place, and that he was unable to enact any meaningful policies.
