The modern state of greece gained its independence after a ten-year war against

Turkey, or more specifically the Ottoman Empire

The answer is    d.  central highlands

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!