Borders are usually defined as geographical boundaries, imposed either by features such as oceans and terrain, or by political entities such as governments, sovereign states, federated states, and other subnational entities. Political borders can be established through warfare, colonization, or mutual agreements between the political entities that reside in those areas.[from wikipedia]

One of the oldest neighborhoods in San Francisco, the Mission District's name is derived from Mission San Francisco de Asis, built in 1776 by the Spanish. The Mission is historically one of the most notable center of the city's Chicano/Mexican-American community.[from wikipedia]