300 BC was period filled with rapid and widespread awakening of all the people involved. The period was marked with new ideals in terms of politics with new and fresh ideas being injected into the world by great thinkers such as Plato and Socrates.
Roman Empire and the Mongol empires were the largest dynasties in the world. They controlled massive territories that spread across long distances. Being able to rule the controlled lands was important. However, the attainment of the lands was equally important.