We think of ratification of amendments to the Constitution as a lengthy process, but of the 27 amendments to the Constitution, ten were ratified in less than a year and a half (less than 548 days).
This wasn’t only true when the US was relatively small: the last “fast-tracked” amendment was ratified as recently as January 1964.
12th Amendment (Electors are directed to vote for a President and for a Vice President rather than for two choices for President), approved in Congress on December 9, 1803, and ratified on June 15, 1804 (189 days)
13th Amendment (slavery or involuntary servitude prohibited), proposed on January 31, 1865, and ratified on December 6, 1865 (309 days).
15th Amendment (a person’s race, color, or prior history as a slave could not be used to bar that person from voting): the Congress passed the amendment on February 26, 1869, and it was ratified on February 3, 1870 (342 days).
17th Amendment (election of Senators by voters rather than state legislatures): passed by Congress on May 13, 1912, and was ratified on April 8, 1913 (330 days).
18th Amendment (Prohibition): passed by Congress on December 18, 1917, ratified on January 16, 1919 (394 days).
19th Amendment (women’s sufferage): passed by Congress on June 4, 1919, ratified on August 18, 1920 (441 days).
20th Amendment (shortens the time frame between federal elections and inauguration; stipulates that if a President-elect dies before inauguration, the Vice President-elect becomes President): passed by Congress on March 2, 1932, and was ratified by the states on January 23, 1933 (327 days).
21st Amendment (repeal of Prohibition): passed by Congress on February 20, 1933 and was ratified on December 5, 1933 (288 days).
23rd Amendment (gives voters in Washington DC the right to elect a President and Vice-President): The Congress passed the amendment on June 17, 1960; the amendment was ratified on March 29, 1961 (285 days).
24th Amendment (made it illegal to impose a poll tax): passed by Congress on August 27, 1962, ratified on January 23, 1964 (514 days).