сколько в мире стран - SERP Analysis

https://www.rbc.ru/life/news/679904479a79478ada3921d8

https://www.worldometers.info/ru/%25D0%25B3%25D0%25B5%25D0%25BE%25D0%25B3%25D1%2580%25D0%25B0%25D1%2584%25D0%25B8%25D1%258F/%25D1%2581%25D0%25BA%25D0%25BE%25D0%25BB%25D1%258C%25D0%25BA%25D0%25BE-%25D1%2581%25D1%2582%25D1%2580%25D0%25B0%25D0%25BD-%25D0%25B2-%25D0%25BC%25D0%25B8%25D1%2580%25D0%25B5/

https://merkator.org.ua/ru/spravochnik/skolko-stran-v-mire/

https://ru.wikipedia.org/wiki/%25D0%25A1%25D0%25BF%25D0%25B8%25D1%2581%25D0%25BE%25D0%25BA_%25D0%25B3%25D0%25BE%25D1%2581%25D1%2583%25D0%25B4%25D0%25B0%25D1%2580%25D1%2581%25D1%2582%25D0%25B2

https://geo.koltyrin.ru/skolko_stran_v_mire.php

https://www.techinsider.ru/popmem/1595433-skolko-vsego-stran-v-mire-vot-chto-nujno-znat/

https://izum.ua/ru/skilky-krayin-na-sviti-tochna-kilkist-i-detali/

https://znanierussia.ru/articles/%25D0%25A1%25D0%25BF%25D0%25B8%25D1%2581%25D0%25BE%25D0%25BA_%25D1%2581%25D1%2582%25D0%25BE%25D0%25BB%25D0%25B8%25D1%2586_%25D0%25B3%25D0%25BE%25D1%2581%25D1%2583%25D0%25B4%25D0%25B0%25D1%2580%25D1%2581%25D1%2582%25D0%25B2

https://uchi.ru/otvety/questions/skolko-stran-v-mire-2bef61e8-c055-4622-8ff7-df73e1e031f2