Travel and easy access to drinking water.
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A primary source is one that is written by someone who experienced the event firsthand. Anne Frank's diary is an example of a primary source. She was the first (primary) person who experienced what happened on that hierarchy.
A secondary source is one that is written about a primary source. It comes second on the hierarchy of receiving historical information because it has to be based on a primary source, which gives the actual information. A history documentary is an example of a secondary source.
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Answer:
In the 11th century CE the Awlil mines were in the hands of Takrur, but it would be the Mali Empire (1240-1645 CE), with its capital at Niani, that dominated the sub-Saharan salt trade following the collapse of the Ghana Empire.
Because Union and strikes were banned by the government WORKERS' WAGES DECREASES.
By abolishing Unions and the right of the workers to stage strike, the government gave enormous power to the industrialists and this led to decrease in the wages of the workers. This was majorly because, the employers knew that the workers have no other choice but to accept what they are offered.
