Whether a massive movement of foreign peoples is a migration, an invasion, or a conquest is a matter of perspective. To the ancient Romans and later Romance historians, the migration of Germanic tribes into the empire in the 5th and 6th centuries was a catastrophic foreign invasion. To the Germanic peoples themselves, it was known as the Volkwanderung (the migration of the people). There is a profound irony that as waves of Muslim migrants press into Germanic Europe, that the very civilization they are now undermining was created in a series of migrations seen by the civilized people they replaced as an invasion. And just as Germanic tribal movements proved inexorable against the politically, economically, and morally weakened Roman state (at least in Western Europe), it appears (barring dramatic reversals of policy and will) that the ongoing wave of Muslim migration will inevitably replace European civilization as we know it. Even more worrisome, if history is any guide, this will happen long before Muslims become a majority there.