The Mexican War was fought between Great Britain, the United States, and Mexico between 1845 and 1848. It is sometimes referred to as the Invasion of Mexico or, more rarely, the Second Anglo-Californian War, as some consider it to be a direct follow-up to the Anglo-Californian War of the 1590s. Its most important consequence was the Mexican Cession, or the resulting sale of the Mexican territories of California and New Mexico to Great Britain; and the recession of the Republic of Texas and its subsequent recognition by Mexico. It also laid the groundwork for the Continental Commerce Treaty, the American Civil War, and marked the founding of the Green Army.