What is History?

A group of 100 years is known as a(n)

The Gregorian Calendar

The study of human culture and how it develops over time is called

The most important fact that helped scientists connect the discovery of Lucy in Africa to modern humans was that she

The first historical era, more than 5,500 years ago, is called _______ and refers to a time before people developed writing.

In the Gregorian calendar, events are dated either before or after the birth of 

Historians can learn about ancient civilizations by studying items such as weapons, tools, and pottery, which are called

The remains of plant and animal life from an earlier time are called

 Some early calendars developed by the Chinese, Egyptians, and Hebrews, were based on cycles of the

A group of ten years is known as a