Around 250 – 300 AD the Roman Empire went through periods of instability that eventually led to the start of the “barbarian” invasions and continued over the next two hundred years until the Roman Empire collapsed in 476 (or 1453 AD). Barbarians were considered by the Romans to be those who lived outside their civilization and were not as educated or sophisticated as them. Nations living outside the Roman Empire attempted to cross the border and often colonized, disrupted, or weakened Roman rule over its territory. But did the barbarian invasions actually cause the decline and fall of the Roman Empire, or was it just a domino effect caused by the large number of events that occurred between 234 and 476 AD? During 243 and 476 AD, some of the main reasons that contributed to the fall of the Roman Empire were population decline, economic problems, the reign of several emperors, and wars with the Visigoths on two different occasions, but ultimately, during the 4th century, the barbarians penetrated deep into Roman territory. The barbarians were nations composed of various...