Igboland Biafra on May 30, 1967. Nigerian General Emeka Odumegwu-Ojukwu on this day made a declaration of independence of Biafra from Nigeria and became the head of state of the new republic. The Nigerian Civil War (or the "Nigerian-Biafran War") lasted from 6 July 1967 until 15 January 1970, after which Biafra once again became part of Nigeria. The Republic of Biafra was defeated after three years of war by the federal government of Nigeria from 1967 to 1970 with military support from the United Kingdom (strategy and ammunition), Soviet Union (ammunition), the United Arab Republic (air force), as well as
Hoehn and Yahr scale Hoehn and Yahr scale The Hoehn and Yahr scale is a commonly used system for describing how the symptoms of Parkinson's disease progress. It was originally published in 1967 in the journal "Neurology" by Melvin Yahr and Margaret Hoehn and included stages 1 through 5. Since then, a modified Hoehn and Yahr scale was proposed with the addition of stages 1.5 and 2.5 to help describe the intermediate course of the disease. This rating system has been largely supplanted by the Unified Parkinson's Disease Rating Scale, which assesses limitation of daily activities and non-motor symptoms in more detail. A 2010