You can ignore if you are not interest, otherwise here is the information I am learning about each sign for each country. Back then there were very limited to learn about each country. Today more and more deaf people from each country innovate a new sign for their country.
Handspeak has an excellent for each country signs.. Click on ASL Dictionary and type of the name of the country.
Like for example Chile ASL sign for CHILE | HandSpeak
Also the sign for Russia can be found here : ASL sign for RUSSIA | HandSpeak ---> The site for the 2018 Russia World Cup !
For the continent America ASL sign for AMERICA | HandSpeak
so Enjoy it !