I don't know if you have to choose only one answer, because answers 2, 3, and 5. It affected throughout the world, and it also reduced communist nations and changed boundaries.
Fertile soil and mild climate!
The level of the oceans' surface is known as the sea level. Sea level is also used to measure the height of certain cities. For example, Big Bear, CA is <span> 6,750 feet above sea level.</span>
It has been accreated and developed in it's core it is retianed
In both places, there are 2 main seasons. The equator is warm all year round and the poles are cold all year round