Earth 2140 Trilogy

The year is 2140. After numerous wars and several environmental disasters, only two world powers remain; the United Civilized States (UCS) covering the American continent, Western Europe and North Africa, and the Eurasian Dynasty (ED) covering the coherent landmasses of Eastern Europe and Asia.

The damage caused by the long wars led both world powers to evacuate the population to recently built underground cities. Australia and most parts of Africa were sacrificed during the long wars, which lasted several decades. Highly toxic biological and chemical weapons were developed on these continent