Chicano literature, the term refers to people of Mexican ancestry, the permanent residents in the U.S. for an extended period. As a part of writing Chicano literature is relatively young, having taken shape in the generation or so after the conclusion of the Mexican war in 1848. The important period in the history of the Mexican Southwest in 1848, when the Treaty of Guadalupe Hidalgo ended two years of warfare between Mexico and the U.S. and ratified the relinquishment of nearly half of Mexico’s land. A good deal of literary energy was expanded in chronicling the American surpassed of the southwest. In the earlier time, the outcome of historical and personal narratives was complemented by a barrage of poetry. It developed various form of literature. By 1900, Mexican American literature had forced as an important part of the literary culture of the U.S. After World War II it accelerated the movement into large cities. The major task now before Chicano and Chicana writers was ethnic identity.