Adamawa State · Crisis deep dive

First Republic (1960–1966)

Yola tax-protest disturbances (1963) — over the Northern Region's flat-rate community tax; suppressed by the Native Authority Police.
1966 anti-Igbo pogrom (Yola, Numan, Mubi) — the May and September 1966 northern killings reach the Adamawa Province towns; estimates vary; the surviving Igbo population is evacuated to the Eastern Region before the Civil War.Unprosecuted Massacre Cycle

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.