Answer:
Correct answer is A. Islamic calendar.
Explanation:
A is correct as this answer known as Hijra happened in 622. This year marks the period from when the Muslims started counting time.
B is not correct as Medieval period starts with the fall of Western Roman Empire.
C and D are not correct as this don't refer to the Muhammed's move from Mecca to Medina.
Answer:
click their picture and follow
Answer:
I don't think so
Explanation:
this is because the earth keeps on moving and hence causing plates to move due to tectonic movements.
also due to the human activities such as use of explosives trigger earth quakes
Because of the breaking up of Pangea, and because it is close to the north american plate.