Use lowercase ISO 639-1 codes for language denominations English (en)Espanol (es)Deutsch (de) and uppercase region code English (en-GB)Espanol es-MXDeutsch de-CH to illustrate language/region and the appropriate fallback.
Add in missing translation files setting the spree.i18n.this_file_language for each, but nothing else.
English (en)
Espanol (es)
Deutsch (de)
and uppercase region codeEnglish (en-GB)
Espanol es-MX
Deutsch de-CH
to illustrate language/region and the appropriate fallback.spree.i18n.this_file_language
for each, but nothing else.