In the StarCraft universe, the Koprulu Sector —nicknamed the Terran Sector— is a sector in space colonized by the Terrans. The sector is one of the main locations where the action of the original StarCraft game takes place. Koprulu encompasses the colonies of Umoja, Tarsonis, Moria, and all other Terran colonies.

History

Following a period of social anarchy and the "fall of western civilization", a new world-government is re-asserted over Earth: the United Powers League (UPL). A police-state, it encompasses all but a few politically unstable South American countries. Rounding up "undesirables" —cyborgs, geneticly "impure" individuals, hackers, political dissidents— Project Purification was instituted: a mass genocide campaign in which millions died.

However, the UPL wanted to explore deep space. It was very risky, but they had no problem with sending political prisoner lab rats to their deaths. Thousands were loaded into four sleeper-ships designated the Reagan, the Argo, the Sarengo, and the Nagglfar and loaded for a 1 year journey into deep space. However, the guidance computer failed, and they traveled at faster than light speeds for 30 years. When they awoke, the survivors had no idea where they were or where Earth was: all hope of making contact again was lost.

One of the spaceships crashed killing all aboard, one founded the colony of Umoja, another founded the colony of Moria, and the last built the main Terran colony in the sector: Tarsonis. The Terrans of Tarsonis eventually re-built the stardrive and created an interstellar Terran Confederacy. There were roughly a dozen important Confederate colony planets in the sector by the 25th century. However, war broke out with the Zerg invasion and subsequent clashes with the Protoss.