The Union was officially founded in 1928, at a meeting in Paris, which followed the International Population Conference held in Geneva during the preceding year (August 29 - September 3, 1927). This was the first World Population Conference - it was organised by Margaret Sanger - stressing the crucial nature of the population problems and their influence on social, economic and political situations. At the end of the scientific meetings of the Conference, there was a meeting of the Executive Committee which decided that (i) "a permanent international organisation should be set up to consider in a purely scientific spirit the problems of population and (ii) a provisional committee be chosen and entrusted with the duty of setting up such organisation".