The Milky Way is too vast, it takes a hundred thousand years for light to travel from one end to the other. To unify the Milky Way, superluminal communication, a high-tech solution, was an absolute necessity.
Even a Level 5 Civilization couldn't instantly move from one end to the other—it was too exhausting to keep running around everywhere. According to human analysis of the relics of explorers, the hyperspace engine of a Level 5 Civilization could reach speeds of up to a hundred times that of light.
One hundred times the speed of light might sound impressive, but faced with the vastness of the Milky Way, it still seemed too slow.
