The Denobulan Unity was formed in the early twentieth century following four centuries of Denobula functioning as an oppressive autocratic dictatorship. Achieving warp flight in the 15th century, this densely populated world of 12 billion endured a dark era where millions perished and unethical genetic and medical experiments were conducted on prisoners. The establishment of the Unity, a unique four-branch democracy, brought about a peaceful global society. Denobulans are today a highly social, polyamorous culture, and their homeworld serves as a major interstellar trade hub between Earth and Deltan Space.