The pus collection causes pressure on the spinal cord. The infection is usually due to bacteria. Often it is caused by a staphylococcus infection that spreads through the spine. It may be caused by tuberculosis in some areas of the world, but it is not as common today as it was in the past.
From the 1830s until 1870, the abolitionist movement attempted to achieve immediate emancipation of all slaves and the ending of racial segregation and discrimination.
A number of Africans were also involved in the abolition movement and worked alongside British abolitionists to bring an end to the commercial trafficking of humans. Ignatius Sancho came to England in 1731, at the age of two.