However, determining the precise beginning and ending to any "period" is often arbitrary, since it has changed over time over the course of history.
Folk music
When we refer to "folk music," we often are referring to well-known, old, traditional music styles in a culture for which we may not even know who composed the songs. Folk music tends to be passed on by oral transmission more than by organized publication. In a way it is the common music of a people or culture.
Separate but equal
How this helps
A system of government in which the state<span> plans and controls the economy and a single, often authoritarian party holds power, claiming to make progress toward a higher social order in which all goods are equally shared by the people.
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I assume you mean the Golden Islamic time from 8th to 13th century!
During this time, Islamic scholars were among the world's best. Among others they:
made achievements in maths (which is why algebra and algorithm are arabic words)
worked on scientific experiment as a technique to pursue knowledw
had some advancements in astrophysics (first reference to Andromeda Galaxy!
had a lot of advances in medicine, such as study of blood circulation, and of nervous system
