Era of Isolation

The Era of Isolation is the period of Terran history lasting between the First Contact War and the Great Galactic War. During this period, the Terran Federal Republic largely abstained from diplomacy or any contact with aliens except to subjugate them as with the dominions and the Menya Union. Lasting three centuries from 2320 to 2647, it is by far the longest period of Terran history. It is sometimes further divided into sub-periods. 
The Era was largely marked by a slowdown of economic, demographic and technological growth relative to the preceding Era of Exploration. Whilst some notable achievements were made, such as the terraforming of Mars and Venus, economic growth was slow. New colonisation efforts also became rarer. The 23rd and 24th centuries saw the domination of the Terran economy by the Terran State Corporation, which made the development of smaller business near-impossible. From 2350 to 2650, the Terran population only tripled, marking the slowest human population growth since the 1700s. This was partially a consequence of the Moses Programme, which significantly increased average lifespans. 
Terran culture was further centralised and both xenophobia and Terran exceptionalism became central parts of Terran culture during the period, particularly in the aftermath of the Wemepo War in the mid-25th century. The entire period was marked by increased militarism and intense military build-up, most markedly at the start and at the end of the Era.