The first one is D. And the second is B.
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.
It is located in the Eastern part of Africa. it is in Kenya
No because waves are no continuous they always crash on top of each other and no wave from the deep ocean can make it to shore without crashing
