 In 1932, in Basle, Switzerland, it was decided to split the congress into two sections, one for the Anthropological and Ethnological Sciences and one for the Prehistoric and Protohistoric Sciences.This is how the ICAES was born, becoming operative in 1934, when it held its first meeting in London, UK.Meetings were scheduled for every four years, but only one more congress was held, in Copenhagen, Denmark, in 1938, before World War II made it impossible for people to convene.