An autoimmune disorder, rheumatoid arthritis occurs when your immune system mistakenly attacks your own body's tissues. Unlike the wear-and-tear damage of osteoarthritis, rheumatoid arthritis affects the lining of your joints, causing a painful swelling that can eventually result in bone erosion and joint deformity. The inflammation associated with rheumatoid arthritis is what can damage other parts of the body as well.
Slavery in ancient Rome played an important role in society and the economy. Besides manual labor, slaves performed many domestic services, and might be employed at highly skilled jobs and professions.Teachers, accountants, and physicians were often slaves.Greek slaves in particular might be highly educated.uring the Pax Romana of the early Roman Empire (1stâ2nd century CE), emphasis was placed on maintaining stability, and the lack of new territorial conquests dried up this supply line of human trafficking. To maintain an enslaved work force, increased legal restrictions on freeing slaves were put into place.
Portugal and Spain Portugal was the first European country to trade in slaves from Africa, initially mainly to bring them back to Portugal (there were 32,000 African slaves in Portugal in the 16th century, working mainly in the fields and sugar plantations).ome, such as England, France and Portugal used slave labour in their colonies while others, such as the Netherlands, Norway and Denmark, were mainly active in the commercial trade and shipping, thus contributing to the trade by carrying slaves from Africa to the Caribbean and Latin America.