After nearly 200 years of existence, the persian empire was conquered by which ruler, who controlled most of the western world in the 300s bc?

Alexander the Great.

Explanation:

The Persian Empire, which was formed during the 6th century BCE was a series of dynasties that lasted into the 20th century in areas of what is now Iran (most current day Iranians consider themselves descendants of this long lasting empire).  

Alexander the Great, was the formidable conqueror of the ancient world and King of Macedonia. Amongst his historical exploits, and following in his father´s campaigns, he managed to conquer, in the 4th century BCE, the powerful Persian Empire, demonstrating his military skills and his thirst for conquest.  

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confucius was a great thinker and teacher, and philosopher succeeded in laying the foundations beloved.

he many principles but waht   was speak about the relationships was the third .

the third important concept , the real man's idea. he is the man who lives up to the highest moral standards. man shows five virtues: in self, generosity, sincerity, perseverance, and benevolence. his relationship is described as follows: when a son is always loyal, as a father is just and gentle, as an administrator is loyal and loyal, and as a husband is honest and fair, and as a friend, he is faithful and languid. if everything is a true happiness conference, justice and harmony will rule the empire.