Explores the history of the world, from paleolithic times to 1500, whichmarks the end of the Middle Ages. Studies the emergence of humanbeings in Africa and their gradual spread through Eurasia, Australia, and theAmericas. Examines the parallel development of Chinese, Indian, MiddleEastern, and European civilizations, along with an investigation concerningtheir interaction, especially through such interregional historical forces asHellenism, Christianity, and Buddhism.