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.
Abolition, Anti-Slavery Movements, and the Rise of the Sectional Controversy. Black and white abolitionists in the first half of the nineteenth century waged a biracial assault against slavery. Their efforts proved to be extremely effective. Abolitionists focused attention on slavery and made it difficult to ignore.