Conversation so far:
Where did Kareem Abdul-Jabbar get Kareem Abdul-Jabbar's name from?
He was named by Hamaas Abdul Khaalis.
When did the new name take effect?
At age 24 in 1971.
How did he get it?
he converted to Islam.

Question: What made him convert?
Self-contained rewrite: What made Kareem Abdul-Jabbar convert to Islam?