The Danish-Norwegian slave trade commenced in 1733 and ended in 1807 when the abolition of slaves was announced. The location of the slave trade primarily occurred in the Danish West Indies (Saint Thomas, Saint Croix, and Saint John) where slaves were tasked with many different manual labour activities, primarily working on sugar plantations. The slave trade had many impacts that varied in their nature (economic and humanitarian), with some more severe than others. After many years of slavery in the Danish West Indies, Christian VII decided to abolish slave trading.