BIT OF HISTORY is a phrase that refers to a small part of the past. The crossword solutions for this phrase are ERA (3 letters), EVENT (5 letters), and RELIC (5 letters). An ERA is a period of time in history, such as the Renaissance or the Industrial Revolution. An EVENT is a specific occurrence, such as the signing of the Declaration of Independence or the Battle of Gettysburg. A RELIC is an object from the past, such as a piece of pottery or a weapon used in a battle. All three of these terms refer to aspects of history that can help us understand the past.