Simplify the following text for a Grade 6 native English-speaking person.
Original: Zanzibar 's main industries are spices ( which include cloves , nutmeg , cinnamon and pepper ) , raffia , and tourism . Zanzibar is also the home of the endemic Zanzibar Red Colobus and the elusive Zanzibar Leopard .
Simplified: Zanzibar was famous worldwide for its spices and its slaves .