- Aro-Ibiniukpabi slave traffic (c. 1650–1902) — the Long Juju oracle at Arochukwu drew "convicted" parties through the Ebonyi salt corridor for sale at Calabar and Bonny; estimated tens of thousands of Cross River Igbo embarked across the period.
- Ezza expansion wars (17th–19th c.) — Ezza-Ezekuna *ogwa* warriors push west into Ezillo, Effium and Ezzangbo; the foundational land-claim disputes that recur into the 21st century.
- Salt-spring control fights at Uburu, Okposi and Enyigba — periodic raids documented in oral histories.
Ebonyi State · Crisis deep dive
Pre-colonial — Aro slaving and salt wars (pre-1900)
Methodology
Tier 1 · primary
Courts. Gazettes. National archives.
Tier 2 · corroborating
OCCRP. HRW. BudgIT. TheCable.
Tier 4 · tertiary, flagged
Wikipedia only where primary is pending. Always labelled.