Complex sentence: In 1965, the Free University of Berlin opened a geomorphological research station in Bardaï; however, research at the station was interrupted several times due to the Chadian Civil War, and the station was ultimately closed in 1974.
Split into simpler sentences: In 1965, the Free University of Berlin opened a geomorphological research station in Bardaï. Research at the station was interrupted several times due to the Chadian Civil War, and the station was ultimately closed in 1974.