The National Archives article supplies the constitutional submission, ratification, and one-year-delay evidence; the Library of Congress chronology independently anchors the January 17, 1920 enforcement date.
The House passed a modified prohibition-amendment resolution on December 17, 1917; Congress submitted it to the states on December 18; Nebraska’s approval supplied the thirty-sixth ratification on January 16, 1919; and, after the amendment’s one-year delay, constitutional Prohibition became operative and legal enforcement began on January 17, 1920.
Article reviewed from title through authorship; dates and amendment text cross-checked within the source.
Keep January 16, 1919 ratification distinct from January 29 certification, October 28, 1919 enactment of the Volstead Act, and January 17, 1920 operational effect.
The complete National Archives article supplies the exact constitutional sequence and the amendment’s operative language.
Separate timeline events now anchor submission, ratification, and operative effect.