Who comprises the largest ethnic group in eastern europe. bohemians magyars roma slavs

The answer is, "Slavs".

Ithink the answer to that would be b):

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!