Who was the Cherokee leader that developed an alphabet system for reading and writing that lead to the establishment of that tribe's own newspaper?

The Cherokee leader who developed an alphabet system for reading and writing was Sequoyah. His creation of the Cherokee syllabary in the early 19th century enabled widespread literacy among the Cherokee people. This innovation led to the establishment of the Cherokee Phoenix, the first Native American newspaper, which began publication in 1828. Sequoyah's work significantly contributed to the preservation and promotion of Cherokee culture and language.