cujus regio, ejus religio
Latin phrase
cuj·us re·gio, ej·us re·li·gio
| \ ˌkü-yu̇s-ˈre-gē-ˌō ˌe-yu̇s-re-ˈli-gē-ˌō
\
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Definition of cujus regio, ejus religio
: whose region, his/her religion : subjects must accept the religion of their ruler