Complex sentence: From 1970 through 2000 he divided his time between academic research and the church, teaching in colleges and graduate schools and spending a year in the Republic of Panama teaching at the Instituto Pan Americano.
Split into simpler sentences: From 1970 through 2000 he divided his time between academic research and the church, teaching in colleges and graduate schools. He also taught for a year in the Republic of Panama at the Instituto Pan Americano.