October 1900 Carlist uprising
1900 CE.
Shown on the map at 41.449°, 2.246°.
The Carlist uprising of October 1900 was an attempted armed insurrection that originated in Badalona, a city on the border with Barcelona, and which spread to other towns in Spain, although the attempted rebellion quickly failed.
Text from the Wikipedia article 1900 Carlist Sublevation, licensed CC BY-SA 4.0.