In the United States, the northern states abolished slavery by 1803—most of the slaves there were house servants. In [[The South]], however, cotton made slavery very profitable and 11 states seceded in 1861 to protect their interest. [[Abraham Lincoln]] achieved the end of slavery in 1863-65, using the Army and the [[13th Amendment]]. In Cuba and Brazil, slavery was unprofitable and finally collapsed in the 1880s as few people wanted to buy slaves. | In the United States, the northern states abolished slavery by 1803—most of the slaves there were house servants. In [[The South]], however, cotton made slavery very profitable and 11 states seceded in 1861 to protect their interest. [[Abraham Lincoln]] achieved the end of slavery in 1863-65, using the Army and the [[13th Amendment]]. In Cuba and Brazil, slavery was unprofitable and finally collapsed in the 1880s as few people wanted to buy slaves. |