Births on May 21

Manuel Pérez y Curis, Uruguayan poet and publisher (d. 1920)

Manuel Pérez y Curis (May 21, 1884 – November 22, 1920) was a Uruguayan poet, born in Montevideo, Uruguay.

27 Mar

Cincinnati riots of 1884
A mob in Cincinnati, Ohio, attacks members of a jury which had returned a verdict of manslaughter in what was seen as a clear case of murder; over the next few days the mob would riot and eventually destroy the courthouse.
20 Apr

Humanum genus
Pope Leo XIII publishes the encyclical Humanum genus.
14 Oct

Photographic film
American inventor George Eastman receives a U.S. Government patent on his new paper-strip photographic film.
22 Oct

Prime meridian (Greenwich)
The Royal Observatory in Britain is adopted as the prime meridian of longitude by the International Meridian Conference.
10 Dec

Adventures of Huckleberry Finn
Mark Twain's Adventures of Huckleberry Finn is published.