99% Invisible

What do Civil War pension files reveal about one of history's most successful slave rebellions? Historian Edda Fields-Black joins Roman to trace a story of fire, flight, and freedom — beginning on a South Carolina rice plantation in 1863, where a Union raid liberated over 700 people in a single night. By unearthing Black soldiers' testimonies buried in military pension applications, they resurrect not just the raid, but the lives and communities it transformed.

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Canada reshaped its music industry with a quirky radio rule that changed who got heard.

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In the early 20th century, nothing quite fit — fire hoses couldn't connect to one another, football teams played with different balls, traffic lights meant different things in different states. Then World War II exposed the deadly cost of incompatibility, and the US quietly imposed a single solution on production lines across the world: the 60-degree screw. Roman Mars and historian Daniel Immerwahr tell the story of a hidden industrial empire, built one standard at a time.

A History of the United States in 100 Objects is a production of 99% Invisible and BBC Studios.

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What started as a revolutionary treatment for river blindness became something far messier.

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In 1876, Americans filled an iron safe with objects meant to tell their story — to be opened a century later. Roman Mars and historian Jill Lepore trace its long wait, from Reconstruction to Watergate, and the surprising, unsettling contents that emerged in 1976. What do the objects we choose to preserve — or forget — reveal about how we author our own history?

A History of the United States in 100 Objects is a production of 99% Invisible and BBC Studios.

Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early.

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Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.