Question

What did the arabs invent that helped in navigation ?​

Answer 1

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The astrolabe was first invented in North Africa and it quickly spread throughout the Middle East. Astrolabes were first introduced to the Islamic world in the 8th century, and as Islam spread throughout the Middle East, North Africa, and Asia, the astrolabe went with it.

Answer 2

Answer:

Among many instruments that arrived in Europe through the Middle East are the lute and the rahab, an ancestor of the violin. Modern musical scales are also said to derive from the Arabic alphabet. According to Hassani, the Prophet Mohammed popularized the use of the first toothbrush in around 600.