The Islam emerged in the sixth century AD, and with it, the first Islamic states started to occur. The Islamic states started to occur because this religion managed to unite lot of tribes and create one powerful entity. The military strength was big, so it was used for expansion, and on the territories that were conquered, the people were converted to Islam, very often forcefully. This has resulted in rapid change of the political and religious map of the world, with a very large area becoming dominated by Islam. The Islamic states, once properly established, flourished and were very advanced, having big achievements in numerous scientific fields. Unfortunately, the fundamentalist fraction managed to prevail over time and stopped the progress, so gradually the Islamic states started to fall behind the other parts of the world when it came to development, and that can be seen even nowadays.
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<em>Hello, Combustion occurs when fossil fuels are burned, and the elements in the fossil fuels oxidize, or combine with oxygen. When coal is burned, the carbon oxidizes to form carbon dioxide, or CO2. Hope That Helps!</em>
<em>From SusieLouielove.</em>
A. collapsing dust clouds
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As populations transition from rural to urban living, many social changes take place. For example, as people move to urban environments, they tend to live in closer proximity to each other. This presents problems when it comes to sanitation and hiegiene.
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