| The 
          Peloponnesian Wars took place in the  IVth century B.C.
          Sparta fought against Athens and behind them other Greek towns
          followed them into warfare. Sparta called on Persia to help them keep
          control of the towns they had occupied. Athens and Thebes became
          allies and together managed to defeat Sparta. King Philip of Macedon
          took advantage of the situation and became ruler of Greece. His reign
          lasted from 360 B.C. to 336 B.C. when, upon his death, his son
          Alexander took the throne. Alexander the Great was responsible for the
          invasion of the Persian empire, which included Syria, Palestine,
          Egypt, Mesopotamia and Iran. This
          century began with the death of Socrates
          (399 B.C.) The two great philosophers Aristotle
          and Plato, one of Socrates
          students and admirers also belonged to this period along with Archytas.
          Aristotle was Alexander the Great's private tutor and instilled in him
          the superiority of the Hellenic culture and encouraged him to go East
          and extend his empire. Plato managed to bring the greatest thinkers of
          the time together at his Academy in Athens. His contributions to
          mathematics include his rigorous method of justifying solutions
          through logical reasoning, his analytical
          method of demonstration and the conservation,
          transmission and development
          of mathematical knowledge at
          that time The
          most significant mathematicians
          of the period were: |