The Nile River Valley
History

A shallow length of the Nile River, between Khartoum and Aswan
Cataract
A shallow length of the Nile River, between Khartoum and Aswan, is called a cataract. In historical terms, a cataract is a series of rapids or waterfalls that made river navigation difficult and served as natural barriers in ancient Egypt.

A journey undertaken by a group of people for discovery and scientific research
Expedition
A journey undertaken by a group of people for discovery and scientific research. Expedition. In History, an expedition is a group journey aimed at exploring unknown territories for new knowledge and information.

The name for Egypt during the 3rd Mill BC, also known as the Age of the Pyramids
Old Kingdom
The name for Egypt during the 3rd millennium BC, also known as the Age of the Pyramids, is the Old Kingdom. The Old Kingdom was a period in ancient Egypt when many of the famous pyramids, including the Great Pyramid of Giza, were built.

A material similar to thick paper that was used in ancient times as a writing surface
Papyrus
A material similar to thick paper that was used in ancient times as a writing surface. Papyrus. Papyrus is an ancient writing material made from the pith of the papyrus plant, used by Egyptians and other cultures around the Mediterranean.

The third pharaoh of the Nineteenth Dynasty of Egypt
Ramses II
The third pharaoh of the Nineteenth Dynasty of Egypt. Ramses II. Ramses II, also known as Ramses the Great, was one of Ancient Egypts most powerful and celebrated pharaohs, known for his military victories and monumental building projects.

A society's categorization of its people into groups based on socioeconomic factors
Social pyramid
A society's categorization of its people into groups based on socioeconomic factors. Social pyramid. In history, a social pyramid is a way of illustrating how societies rank individuals from top to bottom based on their wealth, power, or status.