I have updated the Hard Space map. This reflects my rethinking of the Trading Blocs.
The two veteran players in interstellar colonization are the UN - led by Switzerland, Britain, Russia, and some Asian countries including parts of the devastated China; and the International Commonwealth, which is mostly African and Chinese. The American Federation - where Brazil, Argentina, and the former US hold sway - are latecomers to the interstellar scene. However, they are aggressively expanding into further stars using cutting-edge ships with long-range jump drives.
The default setting is the UN Arm, which is mainly British and Swiss in culture, with some strong elements of Southeast Asian culture as well. The biggest corporations around the UN Arm are the Royal British Interstellar Company (RBIC), the Russo-Chinese Zhang-Markov, and the Swiss biotech giant Sanapharm.