Explain to need of symbols in preparing maps?​

they are preparing on maps in order to refer to certain geographical features in a concise way. For example, a triangle can be a symbol for a mountain. That way, mountains can be shown with a small triangle in the map. This will save a lot of space in the map.

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explanation:

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the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.