D. Ottoman
The ottoman empire was the last great empire, which lasted until the end of the first world war. The causes for its decline were different, but for mostly part it can be attributed to the fact that the great powers who had won the World War I where enemy of the empire, thus many trade lines where closed or very limited. Furthermore, internal conflicts made the empire even weaker.
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D. Desalination
Desalination is the process by which sea water is treated to eliminate salt, thus making the water drinkable. It is an expensive procedure, but almost a necessity in very arid countries where rains and other sources of drinkable water are absent. many countries in Africa, Central Asia and East Asia use desalination as part of how they produce enough water for their needs.
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B. Oil wealth and their role in the Arab-Israeli peace process
Arab Southwest Asia is very important in the geopolitical scale because the zone has access to one of the most important resource nowadays: oil. Conseguentely, the countries used their wealth and priviledge influencing in various aspect the process of peace between Arab and israeli, as well as other conflicts that potentially could impact the production of their most important source of income.
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C. Appalachians
Appalachians
are located in the united States, thus far away from the other mountains, which are along the African and Arabian plates. The Earth is divided in many plates, which flow under the Earth Crost, which is the level we can see. Those plates can crush, going one under or above the other, as result of the movement of the Earth.
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C. Arabic
Arabic is the most common language in the North Africa. This is linked to the history of the countries, because they have been under Arabic influences for a long time, thus it is natural that many people grow up knowing the language of the main influence in the zone. Furthermore, the main religion is Islam, thus linked to the presence of the arabic in the zone.
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B. Monsoons
Monsoons
are a climate phenomenon that interest India and near regions and that express itself in a series of low pressure systems, which leads to heavy rains for many days. The climate phenomenon is a key in the survival of the population, even if it can cause many damages, because it brings water to a region which normally is very arid.
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B. untouchables
The untouchables are implicit in the cast division of India, but they are not a cast like Kshatriyas
, Brahmins
and Vaishayas, because they are ouside of this division. They do not belong to any of the cast, and they are the poorest and worst tolerate people in India. The cast system is a remain of the Induism and while many progresses are been made nowadays, their situations is still difficult to manage.