Answer:
The source which provides information on the basis of eye witness is called primary source.
The source which provides information on the basis of books, paintings, chronicles, etc instead of eye witness is called secondary source.
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The European balance of power referred to European international relations before the First World War, which evolved into the present states of Europe. The Nineteenth Century political concept emerged at the Peace of Paris in 1815. It is often known by the term European State System. Its basic tenet is that no single European power should be allowed to achieve hegemony over a substantial part of the continent and that this is best curtailed by having a small number of ever-changing alliances contend for power.
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When a <span>historian compares transcripts of speeches delivered by powerful leaders throughout world history, these would serve as "primary source documents," since they provide and "unaltered" insight into the past. </span>
The autonomic nervous system<span> is controlled mainly by </span>centers<span> located in the spinal cord, brain stem, and hypothalamus, and functions to </span>control<span> arterial pressure, gastrointestinal motility and secretion, urinary output, sweating, body temperature, and many other bodily activities.</span>
The obstacles faced were- After the Hundred Year's War, France was depopulated, commercially ruined, and agriculturally weak and feudal disorder prevailed.
Charles VII strengthened the monarchy by creating a royal army and this gained security throughout France. He also reconstructed the Burgundian and Armagnac.
His successors also promoted new industries which gave them more money and expanded the royal authority by gaining territories like- Anjou, Bar, Maine and Provence.