Chronological exploration of human civilization
The World History Archives gathers primary sources, dated events, maps, and curriculum notes spanning the earliest river-valley societies to the modern era. Every unit pairs a clear narrative with evidence drawn from original documents so that learners can check the underlying records for themselves.
Browse the study timeline below, explore featured units, or open a primary source for close reading. New material is added to the archive each term.
Browse the curriculum Open the archivesSix major periods organize the archive. Each block introduces its defining societies and offers key named events with dates, the same ones learners are asked to place on a mental map of time.
The first complex societies arose beside the great rivers of the Near East, Egypt, and the Indian subcontinent. Writing, centralized rule, monumental building, and long-distance trade all took shape in this long span of centuries.
Empires and city-states created lasting systems of law, philosophy, government, and engineering. Greece and Rome, along with Han China and Mauryan and Gupta India, expanded interconnection across Eurasia.
Faith, feudalism, and expanding trade networks defined the medieval world. The Byzantine Empire, the Islamic caliphates, and the kingdoms of Europe and Asia all left rich records of law, learning, and commerce.
Oceanic navigation, the printing press, and rising states reshaped the world. European exploration connected the hemispheres while global trade in goods, peoples, and ideas accelerated dramatically.
Steam power, mechanized production, and rapid urbanization transformed work and society. Revolutionary change in politics and industry, alongside imperial expansion, marked this turbulent century and a half.
The twentieth century brought global war, technological leaps, the end of colonial empires, and the rise of international institutions. Studying this era demands constant care with evidence and perspective.
Four of the most-read units in the archive, each with a full lesson set, source packet, and map work.
River valley civilization
This unit follows the Nile valley from unification to the Ptolemaic period. Learners examine hieroglyphic records, royal inscriptions, and the engineering of the pyramids while tracing how the river shaped religion, kingship, and daily life.
Citizenship and law
Two competing models of public life, the Greek city-state and the Roman republic and empire, produced the ideas of citizenship, written law, and civic duty. Primary evidence includes funeral orations, legal codes, and the architecture of public squares.
Exchange across Eurasia
The network of trade routes linking China, India, Persia, and the Mediterranean carried silk, spices, paper, religions, and diseases. Students map the routes, read traveler accounts, and consider how goods moved ideas as well as people.
Oceanic exploration
From the compass to the galleon, this unit explores the ships, winds, and navigational knowledge that carried sailors across the world's oceans. Examining logs and charts reveals how global contact began in earnest after 1492.
Each week the archive highlights one document for close reading. This week we open the preamble of the Code of Hammurabi, the Babylonian law collection from the eighteenth century BCE.
How to read it. The text below is a translation of a cuneiform inscription on a stone stele. Notice how the king justifies his authority by naming the gods, listing the wrongs he will address, and presenting law as an act of justice for the weak. Ask yourself what audience the inscription was written for and what it reveals about that society's values.
When the great gods decreed that Anu and Enlil should make the land secure, they called me, Hammurabi, the shepherd of the upright, to establish justice and truth in the land, to bring about the rule of righteousness, and to protect the weak from the strong.
A short practice question to test your sense of chronology. Choose an answer and the archive will mark it for you.
Which event is commonly cited as the conventional end of the Western Roman Empire?
Answers to common questions about the archive, its methods, and how to use it.