Nine horizontal stripes alternating white and blue, with a white square in the canton containing a yellow Sun of May. Nine stripes represent the original nine departments of Uruguay. The Sun of May, shared with Argentina, references the May 1810 revolution that began the South American independence wars. Adopted in 1830, the year of Uruguayan independence. Designed by Joaquín Suárez. Practise the Uruguay flag in the Flagzio Americas flag quiz across all eight game modes.