SORU: boş bırakılan yere parçanın anlam bütünlüğünü sağlamak için getirilebilecek cümleyi bulunuz
The first US census, which counted 3,9 million people, was conducted in 1790, shortly after George Washingtonbecame president. ---- . It took 18 months to collect the data, often on unofficial sheets of paper supplied by local administrations. In contrast to today's pledge of confidentiality; the 1790 census was displayed in public places and, thus, made the demographic information available to everybody.