Complex sentence: The town was founded on September 15 1865, officially by Colonel Julián Murga, and settled by newly arrived immigrants from Wales, and was named after Dr. Guillermo Rawson, the Argentine Interior Minister of the time, who supported the Welsh settlement in Argentina.
Split into simpler sentences: The town was officially founded on September 15 1865, by Colonel Julián Murga, and settled by newly arrived immigrants from Wales. It was named after Dr. Guillermo Rawson, the Argentine Interior Minister of the time, who supported the Welsh settlement in Argentina.