Alpha History
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Free ad-supported textbook site written by qualified history teachers and academics, covering twelve topics including the French and Russian Revolutions, Nazi Germany, and the Cold War. Each unit combines topic summaries, primary documents, timelines, biographies, and quizzes.
More resources on Modern History
Postwar: A History of Europe Since 1945
Judt's single-volume history of Europe from 1945 to 2005, treating western and eastern halves together across reconstruction, the Cold War, 1968, welfare states, 1989, and integration. Establishes how postwar Europe's politics and memory were built.
The Map as History
Subscription library of roughly 25 animated map series covering prehistory to the twentieth century, with commentary and narration. Useful for seeing how borders, empires, migrations, and wartime fronts shifted over time rather than reading static maps.
Crash Course World History #38: The Cold War
Animated episode of Crash Course World History in which John Green sketches the postwar rivalry between the United States and Soviet Union, its proxy conflicts, and decolonisation. Gives a quick chronological frame before deeper Cold War reading.
Einstein, Oppenheimer, Feynman: Physics in the 20th Century (MIT STS.042J)
History of modern physics and physicists, from relativity and quantum mechanics to high-energy physics and cosmology, set in Imperial Britain, Nazi Germany, wartime America and the Cold War. 26 lecture videos, slides, readings and podcasts show how politics and institutions shaped science.
Industrial
Industrial - A book resource