A detailed discussion on the contradictions between the greek and muslim contribution to the notion of climate variability across the earth​

Migration people get up and go cause they feel it is best for them 

Answerweathering;

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!