Read the following Descriptive Text and answer the question.
The Banda Islands, located in the Maluku province of Indonesia, are renowned for their natural beauty and historical significance. These islands were once the world’s only source of nutmeg, a highly prized spice during the Age of Exploration. The islands' lush greenery and clear turquoise waters make them a paradise for divers and nature enthusiasts. Colonial buildings and old forts remind visitors of the region's rich history and the spice trade that once dominated these shores.
QUESTION:
Based on the text above, what made the Banda Islands famous during the Age of Exploration?