How was the conquest of Medo-Persia by Grecia foretold in this symbolic prophecy?

Answer

"And I saw him come close unto the ram, and he was moved with choler against him, and smote the ram,
and brake his two horns: and there was no power in the ram to stand before him, but he cast him down to
the ground, and stamped upon him: and there was none that could deliver the ram out of his hand." Verse

How then do all become children of God?
What promise is made to those who confess their sins?
How does the death of Christ bear testimony to this?
What kind of friend is He?
Who controls the distribution of the gifts of the Spirit?
How early was this sacrificial system known?
What has He commanded men to observe in memory of this great work?

Questions & Answers are from the book Bible Readings for the Home Circle