en.wikipedia.org
en.wikipedia.org
en.wikipedia.org
livescience.com
worldhist.org
World History Atlas
https://worldhist.org
vividmaps.com
en.wikipedia.org
wiki.conworld.org
wiki.conworld.org
https://wiki.conworld.org › w › Category:Modern_history_by_continent
open.umn.edu
Center for Open Education
https://open.umn.edu › opentextbooks › textbooks › modern-world-history-2021
vaia.com
smithsonianmag.com
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