Resposta curta: não.
No manual do jogo original, páginas 26-27, há uma descrição da história da Terra que levou ao lançamento dos navios adormecidos (ênfase minha):
By the end of the twenty-first century, mankind had seen bold and unprecedented changes within the world. Radical new technologies were surfacing at incredible rates.... In the wake of the eradication of Communism from the Eastern Nations, nuclear weapons quickly became available in abundance. The international power structure... was blasted apart as third-world nations rose to challenge [the superpowers].
Popular sentiment held that the world was plummeting towards an inevitable catastrophe as overpopulation and genetic alteration swept across the globe.... Horrific acts of terrorism and violence erupted between the corporate sector and the humanist factions, resulting in forced police actions across the globe.... Ultimately, the precarious balance of world power exploded into international pandemonium.
On November 22, 2229, the United Powers League was founded. The UPL was to become the ultimate incarnation of the vision of a unified humanity held by the now-defunct United Nations.... The UPL was founded on the basis of "enlightened socialism", but often resorted to harsh, fascist police actions to maintain public order.
A partir disso, parece inequívoco que a antiga ordem social, nações e todos, tenha se desfeito na época em que a UPL surgiu, com ênfase especial no colapso do comunismo. A própria UPL parece ter ética fundamental de todo o lugar; certamente tem alguns elementos stalinistas , algumas idéias comunistas, mas não é um descendente direto de uma única ideologia ou nação da Terra.
Quando perceberam que os terrestres do setor Koprulu tinham descoberto a vida alienígena inteligente, a UPL foi reorganizada na UED com o objetivo expresso de defender a Terra por qualquer meio necessário (leia-se: purgar todos os xenos).