The Gunpowder Empires Ottoman, Safavid, Mughal Islamic Empires.
Difficulties and the Collapse of Empires
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Difficulties and the Collapse of Empires
Political, cultural, environmental, and administrative difficulties lead to
decline, collapse, or transformation
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Deforestation• Deforestation, clearance or clearing is the removal of a forest or
stand of trees where the land is thereafter converted to a non-forest use. Examples of deforestation include conversion of forestland to farms, ranches, or urban use.
• A typical progress trap was that cities were often built in a forested area, which would provide wood for some industry (for example, construction, shipbuilding, pottery). When deforestation occurs without proper replanting, however; local wood supplies become difficult to obtain near enough to remain competitive, leading to the city's abandonment, as happened repeatedly in Ancient Asia Minor. Because of fuel needs, mining and metallurgy often led to deforestation and city abandonment.
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Desertification
• The process of fertile land transforming into desert typically as a result of deforestation, drought or improper/inappropriate agriculture; such as the movement diversion of rivers and streams for irrigation purposes
• Desertification has played a significant role in human history, contributing to the collapse of several large empires, such as Carthage, Greece, and the Roman Empire, as well as causing displacement of local populations.
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Soil Erosion
• There is considerable archaeological evidence from many parts of the world that accelerated erosion by water (in particular) is often associated with early agriculture.
• Deforestation, roads, and urban sprawl are amongst the most significant human activities in regards to their effect on stimulating erosion. Soil degradation is also a contributing factor due to lack of crop rotation
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Silted Rivers• Thick deposits of silty material resulting from aeolian
deposition are often called loess• A Silting River Kills Ephesus• Ancient Ephesus was once a thriving port city but silting of
the harbor from the deposits carried by the Cayster River caused the port to progressively move seaward. The retreating harbor presently six miles from the city ruins, meant that shipping was no longer tenable and as trade ships preferred Smyrna, so too did the Ephesians move out and eventually the magnificent city was fully abandoned.
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DeforestationStumps would also have to be removed before the land could be planted
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DesertificaitonNorthwest China
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Soil ErosionDue to improper agricultural practices
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Silted RiversCause flooding, due to deposits of silt from run off
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External Problems
• Resulting from invasion • Security issues• Han Vs. Xiongnu• Gupta Vs. White Huns• Romans Vs. Northern Neighbors
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Han Vs. Xiongnu• Full-scale war broke out in autumn 129 BC, when 40,000
Chinese cavalry made a surprise attack on the Xiongnu at the border markets.
• As a result of these battles, the Chinese controlled the strategic region from the Ordos and Gansu corridor to Lop Nor. They succeeded in separating the Xiongnu from the Qiang peoples to the south, and also gained direct access to the Western Regions.
• Bad weather in the Xiongnu region forced the Han to retreat from a full victory and after the death of Ban Chao the subsequent dynasties were never able to reach so far West
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Han Dynasty2 CE
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Gupta Vs. White Huns
• The Hephthalites broke east by the end of the fifth century, hastening the disintegration of the Gupta Empire.
• After the sixth century, little is recorded in ancient India about the Hephthalites, and what happened to them is unclear.
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Huns InvadeThe fall of the Gupta Empire
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Romans VS. Northern Aggressors• Large and vigorous, the people prized strength and courage
in battle; these were the attributes of the Germanic tribes• In Asia, during the 4th century, restless nomads called Huns
were on the march from the east. Mounted on swift horses, they attacked with lightning ferocity all tribes in their path. Crossing the Volga River, they conquered the Ostrogoths in eastern Europe. Fearing that the Huns would attack them also, the Visigoths implored Roman authorities for sanctuary in the empire. The Roman officials agreed, promising them lands for settlement provided they came unarmed.
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Romans Vs. Germanics continued• Neither side lived up to the agreement, however, and the
Visigoths, without land and facing starvation, began to sack Roman settlements. When the Roman emperor Valens led a great army against the Visigoths, to the astonishment of Romans and Germans alike, the imperial force was scattered and the emperor slain. This battle on the field of Adrianople in 378 A.D. is considered one of the decisive battles in world history because it rendered the Roman Empire defenseless. German tribes outside the frontiers began to round up their cattle, mobilize their fighting men, and move toward the Roman borders.
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Roman FortificationsConstantly attacked by the Germanic tribes
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Romans VS. GermansThe great battle on the plains of the dining room table
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Germans Vs. RomansEarly Germanic Campaigns