<span>The answer is d. Pericles. 
Under his leadership, Athen’s military and political strength
increased.  He built two parallel walls
that connect Athens with its port Piraeus. 
He promoted the growth Hellenistic culture as the finest works of art
and literature was made in Athens.  He
erected great structures like the Parthenon, the Erechtheum and the temple of
Athena Nike.  Apart from buildings, he
also ordered the construction of beautiful statues. He also helped the poor in
Athens by providing them pay for jury duty and theater admissions.</span>
        
             
        
        
        
That all persons are endowed with natural rights to life,liberty,and property
        
             
        
        
        
We can be sure that ancient civilizations knew of and were concerned about infectious diseases from several facts. The hunter gatherers rarely suffered from water borne diseases. They knew that the water that stank or did not taste well was not good to intake. Their main knowledge came from experience. During the Greek period several doctors like Alcmaeon of Croton were mentioned and hence they must have had the knowledge about infectious diseases like Cholera. Several other infectious disease treatment have also been mentioned during the Greek period.
        
             
        
        
        
I believe the answer is Observations.
Mayan civilizations made architectural designs to use time and days.
I hope this helps!
        
             
        
        
        
Be more free in their descisions.