The Katipunan is established, the discovery of which by Spanish authorities initiated the Philippine Revolution.

The Katipunan, officially known as the Kataas-taasang, Kagalang-galangang Katipunan ng mga Anak ng Bayan and abbreviated as the KKK, was a revolutionary organization founded in 1892 by a group of Filipino nationalists Deodato Arellano, Andrés Bonifacio, Valentin Diaz, Ladislao Diwa, José Dizon, and…