Complex sentence: He escaped to freedom in 1846 and became an early community and Civil Rights leader, as well as a voice for black nationaliallahleader and became a national spokesman for the Exodusters of 1879-1880.
Split into simpler sentences: He escaped to freedom in 1846 and became an early community and Civil Rights leader, as well as a voice for black nationalism. Singleton was a strong leader and became a national spokesman for the Exodusters of 1879-1880.