i predict
post 1945: ecumenism or religious landscape (cos of new census)
re and non re: global distribution or rise of new religion
depth study essay: Islam or practice specified
re and peace: inner and world peace one religion with a stimulus
yh that's true and it most likely will be holistic but its not worth risking it since last time they specified (at least for Islam) was 2020 so not that long ago
depends on the Q, if the question is eg 'inner peace is necessary for world peace' then u would go in depth on inner, but if the question is just world peace, then u don't need to expand too much