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The Documentary 21

@thedocumentary21United StatesJoined 2024Is this your channel?
✦ AI summary· updated Oct 2, 2026

Long-form narrated documentaries explore historical events, espionage, military conflicts, organized crime, and social mysteries.

Made for: AdultsLevel: Beginner-friendlyPresented by: Voice-over / faceless
How is this made?

An AI model reads the channel’s public details: its name, description, keywords and stats, and the titles, dates, lengths and tags of its 30 latest videos. It doesn’t watch the videos, so it can miss things. It’s refreshed about every two months, or sooner when the channel changes.

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Growth (30 days)
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Activity & growth

Upload cadence
Weekly
Uploads / month
6.8
Typical length
54 min
Last upload
2 days ago

When they upload

Peak: Thursday 21:00 UTC

Growth

History builds up day by day from when the channel joined ChannelGems.

Uploads per month

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About

Good for

  • exploring lesser-known historical events
  • learning about espionage and military history
  • following long-form crime documentaries

Topics

espionage historymilitary historyhistorical mysteriesorganized crimepolitical conflictssocial history

Welcome to **The Documentary 21** — where history, mystery, power, crime, war, intelligence, and untold human stories come to life. We create engaging documentaries that uncover hidden events, secret operations, powerful individuals, criminal organizations, political conflicts, and forgotten moments that shaped our world. Every video combines detailed research, cinematic storytelling, archival material, and clear narration to help you understand the deeper story behind the headlines. Subscribe to **The Documentary 21** and discover the stories history tried to hide. **New documentaries regularly.**

Topics and descriptions are generated automatically from public channel data and may contain mistakes.