The United Empire of Earth is a fictional political entity in the video game series Halo. It represents a unified human government that emerged after the events of the Human-Covenant War. The Empire aims to maintain peace and stability across human colonies and protect them from external threats. The Empire is characterized by its advanced technology and military strength, including the use of Spartans and UNSC forces. It emphasizes exploration and expansion, seeking to establish humanity's presence in the galaxy while fostering cooperation among its diverse populations and cultures.