The people living in the place were white people. White people could gain a evolutionary advantage in the cold climate and they quickly gained an advantage in the process of natural selection. Therefore, people with colors except white quickly went extinct. What’s more, people were generally short because when facing a sudden snowstorm, it was easier for shorter people to stay warm and also it was hard for them to be blown away. The harsh climate divided people into thousands of small villages around the globe, isolated in the valleys and mountains, and snowstorms and the huge icy plains prevented them from meeting with each other. Most of the villages were self-sufficient. There was no need for them to went outside their living place to seek for food, and therefore trade was rare. Trade sometimes did take place, but as there was no law in the icy world, wars and robs were more common.