Sign Langauge for other countries:

Sign languages generally do not have any linguistic relation to the oral languages of the lands in which they arise. The correlation between sign and oral languages is complex and varies depending on the country more than the oral language. For example, the US, Canada, UK, Australia and New Zealand all have English as their dominant language, but American Sign Language (ASL), used in the US and most parts of Canada, is derived from French Sign Language whereas the other three countries sign dialects of British, Australian and New Zealand Sign Language.[7] Similarly, the sign languages of Spain and Mexico are very different, despite Spanish being the national language in each country,[8] and the sign language used in Bolivia is based on ASL rather than any sign language that is used in a Spanish-speaking country.