The World Memory Project is a continuation of the World Heritage Project. The World Heritage Project was initiated by UNESCO in 1972, 20 years earlier than the World Memory Project, and it focuses on cultural and cultural values of outstanding significance and universal value in natural and artificial environments. Natural heritage, such as buildings or sites with historical, aesthetic, archeological, scientific, and anthropological research value, while World Memory Engineering focuses on documentary heritage, specifically precious documents in any medium maintained by manuscripts, libraries and archives And oral history. According to this text, what are the main differences between the World Heritage Project and the World Memory Project? ['Culture and Archives.', 'Objects and ruins.', 'Physical and Record.', 'Legacy and literature.']