There are several ways of justifying the claim that race is a social construct. One of the outstanding methods, in most societies, is to biologically or genetically prove that racial variations are immutable or real. The statement, “Humans are 99.9 percent identical genetically” is enough to prove that racial differences cannot be justified at a genetic level, and excludes all the potential questions relating to race (Andreasen, 1999). Researchers have also indicated that race is a kind of appearance of people from a given region, however, according to humans, is 99.9 percent genetically identical (Andreasen, 1999). Additionally, race is a social construct contingent on collective agreement, acceptance and imposition (Andreasen, 1999). This is an indication that race was social constructed for the common good of some people. For instance, in the late nineteenth century and early twentieth century, whites promoted race and racial difference in order to promote slavery and access cheap labor.