Water is the element of flow and the ocean, Earth is the element of Brash and Strength, Fire is the element of Life and Fuel and Air is the element of Peace and Tranquility. The Water Tribe can adapt well to other cultures as well as the other nations that are the opposite, The Earth Kingdom is all about maintaining order and rules as well as fighting, The Fire Nation isn't all about destruction but about life, The Air Nomads are mostly peaceful and calm and they too can adapt well to other nations and move to other places and never stay in the same place all the time.