Final answer:
The fall of the Greek empire was caused by environmental catastrophe, invasion, and political instability. The fall of the Roman empire was influenced by resource allocation, invasion, and internal issues like political corruption and economic inequality.
Step-by-step explanation:
The fall of the Greek empire, specifically the Mycenaeans, can be attributed to a combination of factors. One factor was the climatic or environmental catastrophe, which was thought to have caused agricultural decline and famine. Another factor was the invasion by the Dorians or Sea Peoples, who disrupted the stability of the empire. Additionally, the widespread availability of edged iron weapons contributed to the collapse. These factors, along with economic and political instability, led to large-scale revolts and attempts to overthrow existing kingdoms, resulting in the Greek Dark Ages.
The fall of the Roman empire, on the other hand, is a more complex topic. While the western half of the empire did lose its sovereignty to Germanic barbarians, the eastern half remained intact until 1453. One major cause for the collapse of the western empire was the focus of resources in the east, which left the west vulnerable to invasion. The decline of the Roman Republic can also be attributed to factors such as political corruption, economic inequality, and military conflicts.
In summary, the fall of the Greek empire was influenced by environmental catastrophe, invasion, and political instability, while the fall of the Roman empire was influenced by resource allocation, invasion, and internal issues like political corruption and economic inequality.