original_query: What factors contributed to the decline in population on St. Kitts and Nevis from 1900 to 1929?
query: What factors contributed to the decline in population on St. Kitts and Nevis from 1900 to 1929?
answer: The Great Depression caused a decline of 43% in St. Kitts' population and 9% in Nevis' population from 1900 to 1929.  The collapse of sugar prices and the abandonment or requisition of estates due to inability to pay taxes contributed to this.