For PLATO:
Maya: Created hieroglyphic writing system
Developed the accurate calendar systems
Constructed Chichen Itza
Aztec: Built Tenochtitlan
Sustained 20mil population
Grew floating gardens
The powerful king that united ancient egypt is : Narmer.
Before the reign of narmer, Egypt was divided into lower part and upper part Kingdom. Narmer managed to unified these two kingdoms and became the first king who rule the united ancient egypt
hope this helps
The first president was g e o rge washington :)
John F Kennedy was the 35th American president and was assassinated. In his famous speech, he asked citizens to find ways to improve society.
<h3>What is the speech by Kennedy about?</h3>
Kennedy was a politician and President of the United states that was shot early during his presidency period. He is most known for the Cuban missile crisis and the Bay of Pigs invasion.
He always believed in accomplishment by doing and trying the things to reach the goal. He is famous for his speech about the youth enlightenment and speech of asking not what your country has done.
In his speech, he argues that the Americans should not ask their nation for what they have done but should ask themselves what they have given to their homeland and asks citizens to find a way to improve the society they live in.
Therefore, option B. finding a way to improve society is the correct option.
Learn more about Kennedy here:
brainly.com/question/8924777