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'Mdama is a state on Sanghelios. It is considered by other states to be a backwater state.
After the Human-Covenant war, the Arbiter Thel 'Vadam visited the state to gather support for a peace treaty with humanity. Many supported the idea, including 'Mdama's Kaidon, Levu 'Mdama. However, the elder of Bekan Keep, Jul 'Mdama and his friend Forze did not, and pledged their keeps' support to the Servants of Abiding Truth, who opposed the Arbiter.
- Halo: Glasslands (First appearance)