Answer:
um so how u would do his is...
Explanation: search it
Answer:
A because none of the other options are correct
The Hegira is the journey or migration of Muhammad (the Islamic prophet) and his followers from Mecca to Yathrib in 622. After getting a warning from a group he and his followers surreptitiously left his residence in Mecca to migrate to Yathrib which was 320 km north of Mecca. In his migration, he was followed by Abu Bakr who later became one of the Caliphs.
Answer:
What was the purpose of the mechanical clock in ancient China?
During the Song Dynasty in China, the mechanical clock was invented in 976 A.D. Chan Ssu-Hsun produced a mercury clock. It was the world's first functional mechanical clock. Mechanical clocks are significant because they were designed to tell time more precisely than water or sun clocks.
