This Day in History: 0000-04-04
4 Apr to 18 May – Mamelukes besiege and capture Acre, the last city in Palestine held by the Crusaders (1291).
4 Apr – Professor C. Glen King of the University of Pittsburgh isolated vitamin C (1932).
Consultation, Education, Publication, Transformation, and Events from Human Intelligence and advanced AI to answer questions and enrich life.
