In order to broaden our perspective and gain the deeper understanding necessary to function effectively in today's global arena, we need to focus on "big picture" trends and phenomena—religion and philosophy, science and technology, political organization, art and culture, population changes, environmental interactions, human migrations—across many countries and regions, rather than dwelling on the dates and details of traditional country-based history. This is what study of world history in the 21st century requires—and what ABC-CLIO's World History Encyclopedia provides.