Interactive Chronology Tool

Build history year by year.

Click a year, then use the side panel to add the most essential historical layers. This version focuses on the 1700s, 1800s, 1900s, and 2000s, with cleaner categories and overlapping historical spans.

20th Century Grid

Each square is a year. Colored dots show category layers saved inside that year. Transparent bands show long developments like wars, movements, or scientific eras stretching across multiple years.

Selected Year

1900

Keep this lean: build the year with the most essential layers, then use spans to show developments that stretch across time.

Major Events

Wars, revolutions, treaties, elections, protests, crises.

Important People

Leaders, writers, artists, inventors, reformers, rulers.

Places

Cities, regions, empires, countries, capitals, battlefields.

Ideas and Movements

Nationalism, reform, imperialism, civil rights, industrialization.

Culture and Lifestyle

Books, music, art, film, religion, fashion, everyday life.

Science and Technology

Inventions, medicine, science, communication, transportation.

Historical Spans

Add long developments that run across multiple years. You can stack more than one.

The goal here is fast visual mapping. Students build the year, then scan the century and immediately see clusters of events, people, ideas, and long overlapping developments.