Complex sentence: In Venezuela, known as the land of plantations dependent on slave labour, cocoa became the major crop in the 1770s, overshadowing tobacco, though it was only in the 1800s when coffee became the major plantation crop.
Split into simpler sentences: In Venezuela, known as the land of plantations dependent on slave labour, cocoa became the major crop in the 1770s, overshadowing tobacco. It was only in the 1800s when coffee became the major plantation crop.