The rule of the Zagwe Dynasty is the correct answer.
The event that helped give Christianity a permanent place in Ethiopia was the rise of the Zagwe Dynasty. Even though, during colonialism, Europeans were the ones who spread Christianity in Africa, Ethiopia wasn't included in that. The adoption of Christianity in Ethiopia happened via merchants that resulted in the conversion of Frumentius and consequently led him to become the first bishop in Aksum. The Zagwe dynasty kept the cultural traditions of Aksumite state and let Christianity remain as the official religion in that country.
The reason why it is a problem if governments continually finance goods and services with borrowed money is that eventually the interest owned on these loans will compound to a point where it becomes nearly impossible to pay back.
The turning point in Greek history is considered to be the "Peloponnesian War," since this was when Sparta decided to "check" the fast rising power of Athens and reduce Greek power in general. <span />
The reason for this is that Romans were at the time a very highly developed civilization while the Huns, together with other tribes with which the Romans have dealt with in previous decades, were mostly nomads who did not have permament and grand settlements such as Rome at the time for example. For that reason, this might have made historians like Ammianus be inclined to think that Huns were savage brutes without the capability to think.
George Washington (The American) Won this battle.
