Complex sentence: In 1898, the American National Education Association adopted its own list of 12 words to be used in all writings: "tho, altho, thoro, thorofare, thru, thruout, catalog, decalog, demagog, pedagog, prolog, program".
Split into simpler sentences: In 1898, the American National Education Association adopted its own list of 12 words to be used in all writings. These were: "tho, altho, thoro, thorofare, thru, thruout, catalog, decalog, demagog, pedagog, prolog, program".