Original sentence: Up until the 1960's, the Brothers in the Philippines was a Sub-District (Province) of the De La Salle Institute District of San Francisco and thereafter, up to the establishment of the Philippine District in 1970
Edited sentence: Up until the 1960s, the Brothers in the Philippines was a Sub-District (Province) of the De La Salle Institute District of San Francisco and thereafter, up to the establishment of the Philippine District in 1970