The Mexican-Colombian War was fought from 1899 to 1901, primarily in the country of Central America. The war began with the Mexican occupation of western Central America, claiming that the Centroamerican government was aiding rebels in the Yucatan. Determined to protect its neighbories and client state, the Colombians under Eusebio Iglesias declared war and invaded Central America, fighting the Mexicans for two years until their defeat at Rancho Pineda in June of 1901, which resulted in the Treaty of Pensacola.