Last Updated on April 28, 2021
The theme for National History Day 2020 is Breaking Barriers in History. Below we have highlighted some movements and technologies that have sought to break barriers over time. While some of these may be broad, we encourage you to dig into the links to related primary sources and additional resources to find a particular aspect to focus on.
Movements
- Abolition
- Bonus Army
- Civil Rights
- Conservation
- Harlem Renaissance
- New Deal & the Works Progress Administration
- Woman Suffrage
Technologies
- Air Balloons & Airships
- Brooklyn Bridge
- Cable cars
- Electricity
- Elevator
- Flights & planes
- Golden Gate Bridge
- Gramophone
- Hoover Dam
- Kinetographic camera
- NASA & the Space Age
- Nuclear Fission
- Photophone
- Polio
- Sewing machine
- Skyscrapers
- Submarines
- Steamboat
- Telegraph & Transcontinental Telegraph
- Transcontinental railroad
- Yellow Fever
Related resources
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