On the long trip to Earth, Julian and Poplan review the history of Earth. The lesson starts with the 13 Day War between Earth factions in 2039 AD. After the nuclear exchange, the unification of all governments on Earth occurs in 2129 AD. Following unification man expands into the stars. However, the lack autonomy to colonies, unequal economic polities, and tyranny from the Earth government culminate in multiple conflicts and human rights violations. The end of these chaotic conflicts eventually leads to the creation of the Galactic Republic in 2801 and Earth being forgotten. (thetvdb.com)