Conversation so far:
What year did this CPP movement occur?
This CPP movement was happening around June 12, 1949.
What did Kwame Nkrumah do upon his return to the Gold Coast?
After twelve years abroad pursuing higher education, Kwame Nkrumah returned to the Gold Coast to begin his political career as an advocate of national independence.

Question: What happened?
Self-contained rewrite: What happened after Kwame Nkrumah returned to the Golden Coast?