They helped emperors and kings manage the administration of their empires. They made sure that the laws of the Church and State were obeyed.
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Well if the whole world's population grew, it probably went to 25 mil because this is the WHOLE WORLD we're talking about
It allows the state to make rules and laws that might occur in that area only.
The environmental impact of mining<span> includes </span>erosion<span>, formation of </span>sinkholes<span>, loss of </span>biodiversity<span>, and </span>contamination of soil<span>, </span>groundwater<span> and </span>surface water<span> by chemicals from </span>mining<span> processes. Besides creating environmental damage, the contamination resulting from leakage of chemicals also affect the health of the local population</span>
