Venezuelans approve referendum to claim territory in neighboring Guyana Enlarge this image toggle caption Matias Delacroix/AP Matias Delacroix/AP CARACAS, Venezuela — Venezuelans on Sunday approved a referendum called by the government of President Nicolás Maduro to claim sovereignty over an oil- and mineral-rich piece of neighboring Guyana, the country's electoral authority announced. Latin America Venezuela to hold referendum upholding its …