Conversation so far:
Was Frederick Law Olmsted a conservationist?
Frederick Law Olmsted was an important early leader of the conservation movement in the United States.
What was the conservation movement in which Frederick Law Olmstead was leader?
The conservation movement is a political, environmental, and social movement that seeks to protect natural resources including animal and plant species as well as their habitat for the future.

Question: Why was he a conservationist
Self-contained rewrite: Why was Frederick Law Olmsted a conservationist?