Conversation so far:
what part did Jack London have in socialism?
Jack London joined the Socialist Labor Party in April 1896.
what was Jack London's part in the Socialist Labor Party?
In 1986, the San Francisco Chronicle published a story about the twenty-year-old Jack London's giving nightly speeches in Oakland's City Hall Park.
what was Jack London's viewpoint on socialism?
As Jack London explained in his essay, How I Became a Socialist, his views were influenced by his experience with people at the bottom of the social pit.
what was Jack London's experience with people at the bottom of the social pit like?
what changes did Jack London make with the Socialist Labor Party?
Who did Jack London work with while part of the Socialist Labor Party?
Are there any other interesting aspects about the Jack London article?
In 1901, Jack London left the Socialist Labor Party and joined the new Socialist Party of America.

Question: what did he do after he left?
Self-contained rewrite: what did Jack London do after he left the Socialist Labor Party?