The Navajo code talkers were Native Americans recruited in the U.S. marines in order to speak to the enemies about their plans in attack, only the words spoken were based on the Navajo's own language making their plans unable to be comprehended by the enemy. This lead to the confusion of the enemy since they were unable to break down the code correctly, which allowed the allies to take advantage of it.
The worlds population is growing and is overpopulating. This is negatively affecting the worlds biodiversity.
The cold war affect Europe by dividing it between communist and Democratic countries, which essentially divided Europe into Western Europe and Eastern Europe. This divide caused tension, political unrest and economic difficulties.
