October 24, 1899
1899 treaty between the United Kingdom and Portugal
During the Philippine–American War at Santa Cruz, Laguna, Philippines
March 1899 battle of the Second Samoan Civil War
Bolivia-Brazil border war (1899-1903)
1899 battle between Philippine forces and the US
1899 battle during the Philippine–American War
Labor riot in Idaho, United States
Battle in the Philippine-American War
1899 battle of the Philippine–American War
1899 German–Spanish Treaty