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During the period of 600 BCE to 600 CE, the external factors that caused Imperial decline and collapse were the invasions of outsiders and diseases. However, there were also several internal factors that were more influential to this, such as imperial overreach. Done.

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During the period of 600 BCE to 600 CE, the external factors that caused Imperial decline and collapse were the invasions of outsiders and diseases. However, there were also several internal factors that were more influential to this, such as imperial overreach. Done.

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During the period circa 600 BCE to 600 CE some of the major external factors that caused imperial decline were invasions from nomadic pastoral societies and the spread of disease along trade routes and networks however that's not to say that internal causes weren't apart of imperial decline.  DONE

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During the time period 600 BCE to 600 CE the external factors that caused imperial decline and collapse were invasions from nomadic pastoralists and the spread of epidemics. However, without the internal problem of the growing gap between upper and lower classes, these external factors wouldn't have been enough to cause the collapse of empires. DONE.

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During the period around 600 BCE to 600 CE, the external factors that caused imperial decline of empires were pastoral nomad invasions and the spread of disease through trade. However, internal factors like political instability were also a big factor in causing the collapse of societies.

DONE.

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During the period of 600 BCE to 600 CE, the external factors that caused imperial decline were an overreach of empires ability to sustain themselves and a spread of disease through the empires trade routes.  However, many imperial collapses also had internal problems that made the empire vulnerable to collapse.  DONE

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During the period of 600 BCE to 600 CE, the external factors that caused imperial decline were an overreach of empires ability to sustain themselves and a spread of disease through the empires trade routes.  However, many imperial collapses also had internal problems that made the empire vulnerable to collapse.  DONE

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During the period circa 600 BCE to 600 CE, the external factors that caused imperial decline and collapse were invasions from pastoral nomadic peoples and the spread of epidemic disease through trade networks. However, internal causes such as overreach contributed greatly to collapse as well. Done.

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During the time period 600 BCE to 600 CE , the external factors that caused imperial decline and eventual collapse were invasions from pastoral nomadic societies, and spread of epidemic disease. However,  many internal factors also played a key role in the collapse of ancient empires. DONE

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During the time period 600 BCE to 600 CE , the external factors that caused imperial decline and eventual collapse were invasions from pastoral nomadic societies, and spread of epidemic disease. However,  many internal factors also played a key role in the collapse of ancient empires. DONE

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During the time period 600 BCE to 600 CE,external factors that caused imperial decline and collapse were the overreach of empires and foreign invasions. However most imperial collapses were also do to mass spread of diseases through trading. DONE

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During the time period 600 BCE to 600 CE,external factors that caused imperial decline and collapse were the overreach of empires and foreign invasions. However most imperial collapses were also do to mass spread of diseases through trading. DONE

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During the 600 BCE to 600 CE, the external factors that caused imperial decline and collapse were diseases spread through trade and invasions my nomadic peoples. However there were internal factors that contributed to imperial decline and collapse like over expansion of the empires. Done

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During the period circa 600 BCE to 600 CE, the external factors that caused imperial decline and collapse were the invasion of nomadic people and the spread of deadly diseases through trading networks. However, these effects are limited to areas that were more populated and diverse in terms of different peoples as trade networks and invasions are more common as the number of different people increase. DONE

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During 600 BCE to 600 CE, the external factors that caused the imperial decline and collapse of empires were the spreading of diseases from trading and the invasions of nomadic tribes. However, there is also evidence on internal factors playing a role in the
fall and decline of empires like deforestation for the use of more land and overreaching of empires.

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During the period between 600 BCE to 600 CE, the major external factors that caused the imperial decline and collapse were invasions from pastoral nomadic people and the spread of diseases. However, internal factors like the big class gap between the rich and the poor also caused imperial decline and collapse. DONE.

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During 600 BCE to 600 CE, the external factors that caused the imperial decline and collapse were nomadic invaders and disease from trading. However, the external factors were not the only reason for the decline of empires, internal factors like overreaching and a growing gap between the rich and the poor help the decline too. Done

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During the time period 600 BCE to 600 CE, the external factors that caused empirical decline were invasion by pastoral nomadic societies and the spreed of diseases through trade. However,  not all causes were external there were also some causes that were internal such as a growing gap between the rich and poor. Done

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During the period of 600 BCE to 600 CE, the external factors that caused  imperial decline and collapse were pastoral nomadic invasions and widespread disease. However, there were also internal factors like political instability that influenced the empires to collapse. Done

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During the period from 600 BCE to 600 CE, the external factors that caused the decline and collapse of empires included invasions by pastoral nomads and diseases. However, there were also many internal factors that caused the collapse of empires, such as political instability and deforestation. Done

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During the time period 600 BCE to 600 CE, the external factors that caused imperial decline and collapsed were nomadic invasions into the empires, and the issue of diseases being spread through trade growth in Eurasia. However, there were also internal conflicts that added to imperial collapse such as the growing gap between the rich classes and poorer classes. DONE

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During 600 BCE to 600 CE, the external factors that caused the imperial decline and collapse were the spread of diseases from trade networks and invasions of pastoral nomadic people. However, there were also internal factors that caused the collapses, like over exploitation.
DONE

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During the period 600 BCE to 600 CE, the external causes of the imperial decline and collapse were invasions by the nomadic peoples and diseases that spread through trade. However, there were also significant internal factors that led to the collapse of the empires in the Classical Era. Growing gaps between the rich and poor, internal conflict over power, territorial overreach and over exploitation of resources were major causes of imperial decline as well.
DONE

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During the period circa 600 BCE to 600 CE, the external factors that caused the decline and collapse of empires were the invasions of pastoral nomads and the diseases brought in by trade. However, there were also many internal factors such as the growing division between the rich and poor, leading to revolts, which also led to the collapse of empires. DONE

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During the time period 600 BCE to 600 CE there were many external factors that caused the imperial decline and collapse such as invasions by the nomadic people or the spread of external diseases further spread by trade. however there were many internal factors such as riots caused by the gap between rich and poor.
Done

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During the time period circa 600 BCE to 600 CE, the external factors that caused an imperial decline and eventually led toward the collapse of empires were invasions from other civilizations or pastoral nomads and diseases brought in by an increase in trade. Although there were many external factors, there were a few internal factors, such as a large and growing gap between the rich and the poor.
Done

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During 600 BCE to 600 CE the major external factors causing the imperial decline and collapse of empires were the invasions from pastoral nomadic societies and the spread of new diseases form trading with other places. However, even though external factors helped cause the collapse of empires there were internal factors the played roles in the collapses also.
DONE