Technically, human is the only classification for race. Over time, however, different classifications have arisen based on things ranging from skin to hair color, eye color and even hair texture, bone structure, and height. Different groups of people classify it differently. For instance, in Rwanda there are considered to be two races, the Hutus and Tootsies even though these two ‘separate’ people are actually the same group of people. Their differences are only in bone structure, and has nothing to do with different lineage or genetics at all.