Answer:
The Plan of San Diego, which was a 1915 revolutionary proposal aimed at inciting a rebellion and secession of several southwestern U.S. states, failed to accomplish its original goal. The outcome of the Plan of San Diego was that the instigators and the document were apprehended.
The plan called for a coalition of Mexican and African-American revolutionary groups to launch a coordinated attack on Texas, New Mexico, Arizona, Colorado, and California, with the ultimate goal of establishing an independent republic in the region. However, the plan was poorly organized and executed, and failed to gain significant support among the local population.
The U.S. government, which had been monitoring the activities of the revolutionary groups, was able to infiltrate and disrupt the plan before it could be carried out. Many of the leaders and participants in the plot were arrested and prosecuted, and the idea of a revolutionary uprising in the southwestern U.S. lost much of its appeal in the aftermath of the failed plan.