Russian and British had a ton inclusion in Persia in the eighteenth and nineteenth century and impacted their legislative issues. They even drove wars against local people and interfered in their issues. China and Caucasus had inclusion however not on such an extraordinary scale. Under Cyrus the Great, Persia turned into the focal point of an intense domain that included western Asia, Egypt, and parts of eastern Europe it was inevitably ousted by Alexander the Great in 330 BC.
The correct answer should be Persia. Russian and British had a lot involvement in Persia in the 18th and 19th century and influenced their politics. They even led wars against the locals and meddled in their affairs. China and Caucasus had involvement but not on such a great scale. <span />
The land features depend on the geology , the climate of the earth and formation of land features is a continuos cycle it could alter from time ,not providing clear evidence about history of that specific area
The troposphere is denser than all its overlying atmospheric layers because a larger atmospheric weight sits on top of the troposphere and causes it to be most severely compressed. Fifty percent of the total mass of the atmosphere is located in the lower 18,000 ft of the troposphere.