San Diego, TX, United States
Duval County. Created by the Texas Legislature in 1858 and organized in 1879, Duval County played an important role in the economic and political development of South Texas. Early settlers came to this area in the mid-19th century from Mexico, and Anglo pioneers began arriving in the 1860s. The earl
y economy was based on ranching and agriculture. In the late 1870s the railroad brought increased employment and population to the county. The discovery of oil, gas, and uranium in the early 1900s boo
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