Los Angeles , is the second largest city in the USA, and with a population of 3.8 million is the largest city in the state of California. Often known by its initials, "L.A.", and nicknamed the "City of Angels".
Los Angeles was founded on September 4, 1781, by Spanish governor Felipe de Neve as El Pueblo de Nuestra Señora la Reina de los Angeles del Río de Porciúncula. It became a part of Mexico in 1821, following its independence from Spain. In 1848, at the end of the Mexican-American War, Los Angeles and the rest of California were purchased as part of the Treaty of Guadalupe Hidalgo, thereby becoming part of the United States; Mexico retained the territory of Baja California. Los Angeles was incorporated as a municipality on April 4, 1850, five months before California achieved statehood.