The answer would be : to show the audience that he knows about many uses for herbs.
Hope this helps !
Photon
Answer: cause of the great depression.
Explanation:
The Great Depression began after the stock market impact of October 1929, which made Wall Street panic and lost millions of investors. In several years, buyers spending and investment lowered, causing declines in industrial out take and employing as failing companies fired workers.
I took this from google because I forgot about The Great Depression, But I reworded it so it isnt plagarized. You can do some more rewording if you want.