Maintain army and a navy, coin money, make treaties with foreign nations and raise taxes
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>
Wrote sensational reports on a variety of serous problems facing the US. Their works were widely published, and widely read, and they motivated people to make reforms.
The answers is the last one... hope this helps :)
After the war, the United States had a booming economy. Unemployment was low, and Americans secured loans to purchase new consumer goods such as cars and radios. In Europe, however, the war had taken its toll.