conservation for art is "preserving, fixing, or just restoring old art or other things like artifacts etc." (found in an article on www.msaconservation.com) it's most likely controversial because if something's old and valuable, people want to keep it in it's original form. (just a guess) but that's how it is in the art world.
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Yes
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Of course 11 12 13 you need to think more carefully
Answer:
Bayeux Tapestry Medium: embroidered with needle and thread on cloth Historical Significance: It tells the story of the Norman Conquest of England in 1066. Practical Significance: It was durable, portable, and served as an insulator in the winter.
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