Following the 1868–1878 rebellion of the Ten Years' War, all slavery was abolished by 1886, making Cuba the second-to-last country in the Western Hemisphere to abolish slavery, with Brazil being the last. Instead of blacks, slave traders looked for others sources of cheap labour, such as Chinese colonists and Indians from Yucatán. Another feature of the population was the number of Spanish-born colonists, known as "peninsulares", who were mostly adult males; they constituted between ten and twenty per cent of the population between the middle of the 19th century and the great depression of the 1930s.