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Sources:
Max Roser, "War and Peace," Published online at OurWorldInData.org | https://bit.ly/2S8i4Nf
Jari Eloranta, "Military Spending Patterns in History" | https://bit.ly/3eB8n1h
Diego Lopes Da Silva, Nan Tian, & Alexandra Marksteiner, "Stockholm International Peace Research Institute: Trends in World Military Expenditure, 2020" | https://bit.ly/3sVQHmh
Alexis De Tocqueville, "Democracy in America, Volume 2" | https://amzn.to/3dhfj3S
Karl Marx, "The Communist Manifesto" | https://amzn.to/3xWEJeZ
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Eric Hobsbawm, "The Age of Revolution, 1789-1848" | https://amzn.to/3vTyzuB
A. Wess Mitchell, "The Grand Strategy of the Habsburg Empire" | https://amzn.to/3dgKZ9I
Asa Briggs & Patricia Clavin, "Modern Europe, 1789-Present" | https://amzn.to/2SsIAkP
Jack S. Levy & William R. Thompson, "The Arc of War: Origins, Escalation, and Transformation" | https://amzn.to/3diDkr9
Charles Tilly, "Coersion, Capital, and European States, A.D. 990-1992" | https://amzn.to/3w8cj0t
Music:
"Inhale Exhale," by Braden Deal
"Divider," by Chris Zabriskie
"Mario Bava Sleeps In a Little Later Than He Expected To," by Chris Zabriskie
"Moving Forward," by Adi Goldstein
"Hallon," by Christian Bjoerklund