Earth

Earth, also known sometimes colloquially as Terra, or Taeria by the Martians, is a planet in the Sol System. It is the homeworld of humanity, though it suffered an unfortunate fate by their hands during the massively destructive event known as The Collapse. Before the collapse, it was home to millions of different forms of life, various different biomes, and 7 main landmasses. It had 5 main superpowers pre-collapse, the North American Union, the Anglo-French Republic, the Soviet Union, the Republic of China, and the Empire of Brazil. Various technologies still in use to date were invented on Earth, such as faster-than-light travel, spaceflight, the automobile, and firearms. It is succeeded by Mars as the capital of the UNM, and as the new homeworld of humans. The planet might have another chance, as there are abundant resources to re-terraform the former home of humanity, though there has been no attempt to do so by the UNM.