Final answer:
Ron Clark left North Carolina and went to Harlem, New York City because Harlem was a significant location for African Americans moving from the south during the Great Migration and the Harlem Renaissance.
Step-by-step explanation:
Ron Clark left North Carolina and went to Harlem, New York City because Harlem was a significant location for African Americans moving from the south during the Great Migration. African Americans saw the opportunity for economic advancement, jobs, education, and a more tolerant environment in the northern and midwestern states. Harlem became a major center for African American artists, writers, and entertainers during the Harlem Renaissance, making it an attractive place for Ron Clark to pursue his career and make a difference in the lives of students.