Complex sentence: In September 1987, at a World Chiropractic Summit convened by the European Chiropractors' Union in London, England there was agreement that a Presidents Committee be formed to inquire into, and report upon, the formation of a world federation representing national chiropractic associations.
Split into simpler sentences: In September 1987, at a World Chiropractic Summit convened by the European Chiropractors' Union in London, England. There was agreement that a Presidents Committee be formed to inquire into, and report upon, the formation of a world federation representing national chiropractic associations.