Such groups include hunter-gatherers, pastoral nomads (owning livestock), and tinkers or trader nomads. In the twentieth century, population of nomadic pastoral tribes slowly decreased, reaching to an estimated 30–40 million nomads in the world as of 1995.
The Soviet government followed a policy of collectivization <span> when it took private property after WWI without payments to the former owners.</span>
I believe the answer is: Saharan desert
In Hot Desert such as sahara, there is very few water source that organism can use to drink and replenish the fluid in their body, which is why not many animal can afford to cross the Saharan desert.
Camels is the only animal available that could store a Huge amount of water in their hump, which enable them to cross the desert for a very long time without needing to drink.
The Open Door Notes - sent by U.S. Secretary of State John Hay in 1899 to open up Chinese ports to American merchants. European powers had "spheres of influence" in different port cities throughout China, and the United States wanted access to China's markets.