Now as we get further into the fourth century here, and especially into the fifth century, we'll see that the empire further and further fragments and gets diluted and really just breaks down. One major factor in that breakdown is in that fourth century, in the fourth and fifth centuries, you have a group called the Huns coming in from Central Asia, coming in from Northern Europe right over here, and they are fierce nomadic conquerors. And they're so fierce that they start pushing more of the Germanic tribes across the Rhine and the Danube. And a lot of these Germanic tribes, at first, even though their history has been fighting the Romans, a lot of them try to seek refuge in the Roman Empire, and they're given refuge in the Roman Empire, but while they have that refuge, they're treated very, very, very badly. And all of that comes to a head in the, like I should say, the last quarter of the fourth century with the Gothic Wars, and the Gothic Wars really have a decisive battle at Adrianople, originally Hadrianopolis, named after the emperor Hadrian. And at Adrianople, the Gothic tribes in particular, and when we say Gothic, we're really talking about Germanic tribes, and this one in particular, as you can see from this legend right over here, this is the Visigoths, or Western Goths. They're able to decisively defeat the Eastern Roman emperor Valens.