D : Germany invasion of France
The answer is "B", varied ecological regions.
Oklahoma contains 10 distinct ecological regions. That is more ecological regions per square mile than in any other state by a wide margin.
They died from cold,starvation and diseases such as influenza.
The answer is C, and the reason why is because the climate changed and since they where not used to that, that affected them, also rainfall and flooding started to shrink and that also contributed to the downfall of the Old Kingdom.
Answer:
A. Perceptual definitions
Explanation:
When defining regions, geographers avoid using subjective information in determining boundaries. This includes opinions and perceptual information