Complex sentence: Brazil's ethanol program started in 1975, when soaring oil prices put a chokehold on the ecoom sugar cane was an obvious candidate, given Brazil's almost endless amount of arable land and favourable climate.
Split into simpler sentences: Brazil's ethanol program started in 1975, when soaring oil prices put a chokehold on the economy. Ethanol made from sugar cane was an obvious candidate, given Brazil's almost endless amount of arable land and favourable climate.