To the Editor: They say history repeats itself. Especially when people aren't wise enough to understand what happened before. A man by the name of Edward Gibbon studied why the Roman Empire declined and fell, trying to determine how a nation could be so great and then suddenly collapse. How could that happen and could it happen again? When reading the five reasons Mr. Gibbon came up with and could the United States be far behind? Here are the five reasons: • Raid increase in divorce and undermining of the sanctity of the home with is the backbone of society.