Mycenaean Civilization was at its height from 1400 bc to 1200 bc.
The Aztecs were able to amass such a large empire in such a short period of time because the groundwork was already there! As the Aztecs began to amass power, city-states and other domains already existed in Central Mexico. Therefore, the Aztecs (who in their early history were renowned mercenaries) eventually began to conquer these other locations and bring them under Aztec control. So instead of having to go out an build an extensive empire, the Aztecs were able to conquer smaller political entities that already existed.<span />
I believe the answer is: C. He was worried about his border with North Korea being in jeopardy.
Mao zedong feared that if he let the allied forces took control of north korea, the allied forces would be able to establish a navy base on that territory and exposed the chinese mainland from naval attack from north Korea. Because of this, he decided to help the north korean with both millitary soldiers and supplies.