Broadly speaking, his magnum opus, 'The Histories', was a story of the war between the huge Persian empire and the smaller
Greek city states. But this
paper will not merely be a summary of the story, though it will be generally discussed. It will also investigate some of the reasons why Herodotus' great work was so significant for writers and historians thereafter. The main argument of the paper will be that although Herodotus was not the first historian, he was the first to make investigation and research the key to history.