I believe the answer is: A. The Declaration cannot be enforced because each nation has its own sovereignty.
This mean that a country does not have the jurisdiction to determine the type of legislation that shall be made by other countries, even if it's based on good intention. But, the universal declaration of human rights create an internationally acknowledge standard on the things that can and cannot be considered a violation of human rights.
He went to Medina, this event is known as the <em>hijra </em>and he embarked on said journey in the year 622. Which on the Muslim calendar, is year 1. However, what is of particular interest is that the city is also referred to as Yathrib and "Medina" means "The city" when translated to English.
It depends on which time period. But, probably A.
answer c for 15 and answer b for 16
The third answer!
Hope it helped!!