In 1917, Saint Thomas was purchased (along with the rest of the Virgin Islands) by the United States for $25 million in gold ($ million today), as part of a defensive strategy to maintain control over the Caribbean and the Panama Canal during the First World War. The transfer occurred on March 31, 1917, behind Fort Christian before the barracks that now house the Legislature of the U.S Virgin Islands. The baccalaureate service for the transfer was held at the St. Thomas Reformed Church as it was identified as the American church in the Danish West Indies.