12) Thrace. The Columbia Encyclopedia, Sixth Edition. 2001
...Balkan Peninsula and comprising NE Greece, S Bulgaria, and European Turkey. Its boundaries have varied in different periods. It is washed by the Black Sea in the...

13) Alcibiades. The Columbia Encyclopedia, Sixth Edition. 2001
...Athenian statesman and general. Of the family of Alcmaeonidae, he was a ward of Pericles and was for many years a devoted attendant of Socrates. He turned to politics...

14) Persia. The Columbia Encyclopedia, Sixth Edition. 2001
...The article Iran contains a description of the geography and economy of the modern country and a short account of its history since the Arab invasion of the 7th cent....