Strictly speaking, race among humans has no real meaning because all humans belong to the same species known as Homo sapiens. In other words, there is no factual biological or genetic basis for the concept of race. There is only one human species, which originates in Africa and the differences in external characteristics of humans in different parts of the world only evolved as people adapted to different environmental characteristics, especially the weather conditions. What I'm basically saying is that there is nothing like race, we are all one.
In the history of humankind though, especially since the 16th and 17th centuries, when Europeans started to travel around the world and 'conquered' foreign lands, the concept of race has been used to steal land, to kill the indigenous peoples of those lands, to sell people like cattle and to rob and to rape at will. When the Europeans spread out from their continent, they felt superior to the people they found in other continents and, often referring to verses of the Old Testament, they used the bible to justify their crimes.
