How to use What-d in a sentence

The U.S. federal court system is vast. Not only can you find specialty courts like the Court of Federal Claims and Court of International Trade, but you have several district courts in each of the different regions. To keep them all straight, learn the different federal and district court abbreviations that might appear on court documents.

Historians rely on written records and archaeological evidence to understand more about human history. They use these resources to divide human existence into five main historical eras: Prehistory, Classical, Middle Ages, Early Modern, and Modern eras. Keep reading to learn the main civilizations, technological achievements, important historical figures, and significant events during these major time periods in history.