Complex sentence: Zile once had a great forest covering most of the plain, but during the 1950s, the city lost much of its forest because of the excessive breeding of goats and the use of wood for heating purposes.
Split into simpler sentences: Zile once had a great forest covering most of the plain. During the 1950s, the city lost much of its forest because of the excessive breeding of goats and the use of wood for heating purposes.