The Trans-Atlantic Slave Trade is a period of human history that took place roughly from the 1500s to the 1800s. Involving multiple nations across four continents that made up a majority of the Western Hemisphere, most of this timeframe even predates our country's somewhat brief history. Although this much is true, it has still nonetheless left a negative mark on America's rather tumultuous past that can be used to study and learn from as a culture.