Thousands of years ago, a large portion of georgia was under the waters of the atlantic ocean. as the waters receded, what region of georgia was formed?

the answer is use of support  

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.