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Animation by Josh Sherrington
Sound by Graham Haerther
Thumbnail by Simon Buckmaster

Select footage courtesy the AP Archive

References:
[1] https://qz.com/1085125/san-ysi....dro-the-busiest-land
[2] https://data.worldbank.org/ind....icator/NY.GNP.PCAP.C
[3] http://www3.weforum.org/docs/G....lobal_Social_Mobilit
[4] https://www.tandfonline.com/doi/abs/10.1080/08865655.2018.1445548?needAccess=true&journalCode=rjbs20
[5]
[6] https://www.usatoday.com/borde....r-wall/us-mexico-int
[7] https://goo.gl/maps/LLDCgKXqZnCJEYY87
[8] https://www.usatoday.com/borde....r-wall/story/human-s
[9] https://www.cbp.gov/newsroom/l....ocal-media-release/l
[10] https://www.cbp.gov/sites/defa....ult/files/assets/doc
[11] https://www.cbp.gov/sites/defa....ult/files/assets/doc

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