1220s BC Decade From Wikipedia, the free encyclopedia The 1220s BC is a decade that lasted from 1229 BC to 1220 BC. Events and trends 1221 BC—Pharaoh Merneptah defeats a Libyan invasion.[1] References [1]Davisson, William I.; Harper, James E. (1972). European Economic History. Ardent Media. p. 73. This BC year article is a stub. You can help Wikipedia by adding missing information.vte Related Articles