Complex sentence: The Reno Brothers Gang, also known as The Renos or The Reno Gang, was a gang of criminals that operated in the Midwestern United States just after the American Civil War until the lynchings of ten of their members by vigilante mobs in 1868.
Split into simpler sentences: The Reno Brothers Gang, also known as the Renos or the Reno Gang, was a group of criminals that operated in the Midwestern United States during and just after the American Civil War. The gang was broken with the lynchings of ten of its members by vigilante mobs in 1868.