References: Wikipedia contributors. (2018, September 4). Barack Obama. In Wikipedia, The Free Encyclopedia. Retrieved 19:43, September 5, 2018, from https://en.wikipedia.org/w/index.php?title=Barack_Obama&oldid=857936246 Wikipedia contributors. (2018, August 30). Slavery. In Wikipedia, The Free Encyclopedia. Retrieved 19:47, September 5, 2018, from https://en.wikipedia.org/w/index.php?title=Slavery&oldid=857306597 In-text citations: In contrast to his successor, President Trump, President Obama has a high approval rating worldwide (“Barack Obama,” n.d.). Several types of slavery are most common, all falling under the general heading of chattel slavery, which refers to legalised enslavement of an individual within a particular system of laws (“Slavery,” n.d.).